diff --git a/core/lib/Drupal/Core/Entity/Entity.php b/core/lib/Drupal/Core/Entity/Entity.php
index adbb047..457df0c 100644
--- a/core/lib/Drupal/Core/Entity/Entity.php
+++ b/core/lib/Drupal/Core/Entity/Entity.php
@@ -19,6 +19,8 @@
  *
  * This class can be used as-is by simple entity types. Entity types requiring
  * special handling can extend the class.
+ *
+ * @see \Drupal\Core\Entity\EntityManager
  */
 class Entity implements IteratorAggregate, EntityInterface {
 
diff --git a/core/lib/Drupal/Core/Entity/EntityInterface.php b/core/lib/Drupal/Core/Entity/EntityInterface.php
index 94ecc3b..744dc3c 100644
--- a/core/lib/Drupal/Core/Entity/EntityInterface.php
+++ b/core/lib/Drupal/Core/Entity/EntityInterface.php
@@ -17,6 +17,9 @@
  *
  * When implementing this interface which extends Traversable, make sure to list
  * IteratorAggregate or Iterator before this interface in the implements clause.
+ *
+ * @see \Drupal\Core\Entity\Entity
+ * @see \Drupal\Core\Entity\EntityManager
  */
 interface EntityInterface extends ContextAwareInterface, ComplexDataInterface, AccessibleInterface, TranslatableInterface {
 
diff --git a/core/lib/Drupal/Core/Entity/EntityManager.php b/core/lib/Drupal/Core/Entity/EntityManager.php
index caf46a2..cd1a59b 100644
--- a/core/lib/Drupal/Core/Entity/EntityManager.php
+++ b/core/lib/Drupal/Core/Entity/EntityManager.php
@@ -167,6 +167,7 @@
  * \Drupal\Core\Entity\EntityManager::defaults.
  *
  * @see \Drupal\Core\Entity\Entity
+ * @see \Drupal\Core\Entity\EntityInterface
  * @see entity_get_info()
  * @see hook_entity_info_alter()
  */