diff --git a/lib/RetailCrm/Methods/V5/References.php b/lib/RetailCrm/Methods/V5/References.php
index a51e72e..bfb6cda 100644
--- a/lib/RetailCrm/Methods/V5/References.php
+++ b/lib/RetailCrm/Methods/V5/References.php
@@ -30,4 +30,210 @@ use RetailCrm\Methods\V4\References as Previous;
 trait References
 {
     use Previous;
+
+    /**
+     * Get costs groups
+     *
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function costGroups()
+    {
+        return $this->client->makeRequest(
+            '/reference/cost-groups',
+            "GET"
+        );
+    }
+
+    /**
+     * Edit costs groups
+     *
+     * @param array $data
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function costGroupsEdit(array $data)
+    {
+        if (!array_key_exists('code', $data)) {
+            throw new \InvalidArgumentException(
+                'Data must contain "code" parameter.'
+            );
+        }
+
+        if (!array_key_exists('name', $data)) {
+            throw new \InvalidArgumentException(
+                'Data must contain "name" parameter.'
+            );
+        }
+
+        if (!array_key_exists('color', $data)) {
+            throw new \InvalidArgumentException(
+                'Data must contain "color" parameter.'
+            );
+        }
+
+        return $this->client->makeRequest(
+            sprintf('/reference/cost-groups/%s/edit', $data['code']),
+            "POST",
+            ['costGroup' => json_encode($data)]
+        );
+    }
+
+    /**
+     * Get costs items
+     *
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function costItems()
+    {
+        return $this->client->makeRequest(
+            '/reference/cost-items',
+            "GET"
+        );
+    }
+
+    /**
+     * Edit costs items
+     *
+     * @param array $data
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function costItemsEdit(array $data)
+    {
+        if (!array_key_exists('code', $data)) {
+            throw new \InvalidArgumentException(
+                'Data must contain "code" parameter.'
+            );
+        }
+
+        if (!array_key_exists('name', $data)) {
+            throw new \InvalidArgumentException(
+                'Data must contain "name" parameter.'
+            );
+        }
+
+        return $this->client->makeRequest(
+            sprintf('/reference/cost-items/%s/edit', $data['code']),
+            "POST",
+            ['costItem' => json_encode($data)]
+        );
+    }
+
+    /**
+     * Get legal entities
+     *
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function legalEntities()
+    {
+        return $this->client->makeRequest(
+            '/reference/legal-entities',
+            "GET"
+        );
+    }
+
+    /**
+     * Edit legal entity
+     *
+     * @param array $data
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function legalEntitiesEdit(array $data)
+    {
+        if (!array_key_exists('code', $data)) {
+            throw new \InvalidArgumentException(
+                'Data must contain "code" parameter.'
+            );
+        }
+
+        return $this->client->makeRequest(
+            sprintf('/reference/legal-entities/%s/edit', $data['code']),
+            "POST",
+            ['legalEntity' => json_encode($data)]
+        );
+    }
+
+    /**
+     * Get couriers
+     *
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function couriersList()
+    {
+        return $this->client->makeRequest(
+            '/reference/couriers',
+            "GET"
+        );
+    }
+
+    /**
+     * Create courier
+     *
+     * @param array $courier
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function couriersCreate(array $courier)
+    {
+        return $this->client->makeRequest(
+            '/reference/couriers/create',
+            "POST",
+            ['courier' => json_encode($courier)]
+        );
+    }
+
+    /**
+     * Edit courier
+     *
+     * @param array $courier
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return \RetailCrm\Response\ApiResponse
+     */
+    public function couriersEdit(array $courier)
+    {
+        if (!array_key_exists('id', $courier)) {
+            throw new \InvalidArgumentException(
+                'Data must contain "id" parameter.'
+            );
+        }
+
+        return $this->client->makeRequest(
+            sprintf('/reference/couriers/%s/edit', $courier['id']),
+            "POST",
+            ['courier' => json_encode($courier)]
+        );
+    }
 }
diff --git a/tests/RetailCrm/Tests/Methods/Version5/ApiClientReferenceTest.php b/tests/RetailCrm/Tests/Methods/Version5/ApiClientReferenceTest.php
index 646e34a..1a08b74 100644
--- a/tests/RetailCrm/Tests/Methods/Version5/ApiClientReferenceTest.php
+++ b/tests/RetailCrm/Tests/Methods/Version5/ApiClientReferenceTest.php
@@ -38,6 +38,7 @@ class ApiClientReferenceTest extends TestCase
         $client = static::getApiClient();
 
         $method = $name . 'List';
+        echo $method;
         $response = $client->request->$method();
 
         /* @var \RetailCrm\Response\ApiResponse $response */
@@ -153,6 +154,8 @@ class ApiClientReferenceTest extends TestCase
             ['statuses'],
             ['sites'],
             ['stores'],
+            ['couriers'],
+            ['costs']
         ];
     }