diff --git a/core/modules/book/book.module b/core/modules/book/book.module
index d97dcf1..ab3f3b4 100644
--- a/core/modules/book/book.module
+++ b/core/modules/book/book.module
@@ -162,14 +162,6 @@ function book_menu() {
     'route_name' => 'book_render',
     'type' => MENU_SUGGESTED_ITEM,
   );
-  $items['book/export/%/%node'] = array(
-    'page callback' => 'book_export',
-    'page arguments' => array(2, 3),
-    'access callback' => 'book_export_access',
-    'access arguments' => array(3),
-    'type' => MENU_CALLBACK,
-    'file' => 'book.pages.inc',
-  );
   $items['node/%node/outline'] = array(
     'title' => 'Outline',
     'page callback' => 'book_outline',
@@ -1370,3 +1362,39 @@ function book_library_info() {
 
   return $libraries;
 }
+
+/**
+ * Generates HTML for export when invoked by Drupal\book\Controller\BookController::export().
+ *
+ * The given node is embedded to its absolute depth in a top level section. For
+ * example, a child node with depth 2 in the hierarchy is contained in
+ * (otherwise empty) <div> elements corresponding to depth 0 and depth 1.
+ * This is intended to support WYSIWYG output - e.g., level 3 sections always
+ * look like level 3 sections, no matter their depth relative to the node
+ * selected to be exported as printer-friendly HTML.
+ *
+ * @param \Drupal\node\Plugin\Core\Entity\Node
+ *   The node to export.
+ *
+ * @return
+ *   A string containing HTML representing the node and its children in
+ *   the book hierarchy.
+ *
+ * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
+ * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
+ */
+function book_export_html(Node $node) {
+  if (user_access('access printer-friendly version')) {
+    if (isset($node->book)) {
+      $tree = book_menu_subtree_data($node->book);
+      $contents = book_export_traverse($tree, 'book_node_export');
+      return theme('book_export_html', array('title' => $node->label(), 'contents' => $contents, 'depth' => $node->book['depth']));
+    }
+    else {
+      throw new NotFoundHttpException();
+    }
+  }
+  else {
+    throw new AccessDeniedHttpException();
+  }
+}
diff --git a/core/modules/book/book.routing.yml b/core/modules/book/book.routing.yml
index 77b492b..4532314 100644
--- a/core/modules/book/book.routing.yml
+++ b/core/modules/book/book.routing.yml
@@ -18,3 +18,10 @@ book_settings:
     _form: 'Drupal\book\BookSettingsForm'
   requirements:
     _permission: 'administer site configuration'
+
+book_export:
+  pattern: '/book/export/{type}/{node}'
+  defaults:
+    _controller: '\Drupal\book\Controller\BookController::export'
+  requirements:
+    _permission: 'access printer-friendly version'
diff --git a/core/modules/book/lib/Drupal/book/Controller/BookController.php b/core/modules/book/lib/Drupal/book/Controller/BookController.php
index 8c2fceb..bed372f 100644
--- a/core/modules/book/lib/Drupal/book/Controller/BookController.php
+++ b/core/modules/book/lib/Drupal/book/Controller/BookController.php
@@ -8,6 +8,8 @@
 
 use Drupal\Core\ControllerInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 use Drupal\book\BookManager;
 
@@ -86,4 +88,42 @@ public function bookRender() {
     return theme('item_list', array('items' => $book_list));
   }
 
+  /**
+   * Generates representations of a book page and its children.
+   *
+   * The function delegates the generation of output to helper functions. The
+   * function name is derived by prepending 'book_export_' to the given output
+   * type. So, e.g., a type of 'html' results in a call to the function
+   * book_export_html().
+   *
+   * @param $type
+   *   A string encoding the type of output requested. The following types are
+   *   currently supported in book module:
+   *   - html: Printer-friendly HTML.
+   *   Other types may be supported in contributed modules.
+   * @param \Drupal\node\Plugin\Core\Entity\Node $node
+   *   The node to export.
+   *
+   * @return
+   *   A string representing the node and its children in the book hierarchy in a
+   *   format determined by the $type parameter.
+   *
+   * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
+   *
+   * @todo Change this to plugins or serilization.
+   */
+  function export($type, Node $node) {
+    $type = drupal_strtolower($type);
+
+    $export_function = 'book_export_' . $type;
+
+    if (function_exists($export_function)) {
+      $output = call_user_func($export_function, $node);
+      return new Response($output);
+    }
+    else {
+      drupal_set_message(t('Unknown export format.'));
+      throw new NotFoundHttpException();
+    }
+  }
 }