diff --git a/core/modules/book/src/BookManagerInterface.php b/core/modules/book/src/BookManagerInterface.php
index f3e4a89..e46a5ba 100644
--- a/core/modules/book/src/BookManagerInterface.php
+++ b/core/modules/book/src/BookManagerInterface.php
@@ -63,8 +63,6 @@ public function getActiveTrailIds($bid, $link);
    * if $translate is TRUE, it also checks access ('access' key) and
    * loads the title from the node itself.
    *
-   * On top of it, loadBookLinks
-   *
    * @param int $nid
    *   The node ID of the book.
    * @param bool $translate
@@ -72,6 +70,8 @@ public function getActiveTrailIds($bid, $link);
    *
    * @return array
    *   The book data of that node.
+   *
+   * @see \Drupal\book\BookOutlineStorageInterface::loadMultiple
    */
   public function loadBookLink($nid, $translate = TRUE);
 
@@ -92,6 +92,8 @@ public function loadBookLink($nid, $translate = TRUE);
    *
    * @return array[]
    *   The book data of each node keyed by NID.
+   *
+   * @see \Drupal\book\BookOutlineStorageInterface::loadMultiple
    */
   public function loadBookLinks($nids, $translate = TRUE);