More source links
diff --git a/Doc/library/weakref.rst b/Doc/library/weakref.rst
index dec415c..63545ab 100644
--- a/Doc/library/weakref.rst
+++ b/Doc/library/weakref.rst
@@ -8,6 +8,9 @@
 .. moduleauthor:: Martin von Löwis <martin@loewis.home.cs.tu-berlin.de>
 .. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
 
+**Source code:** :source:`Lib/weakref.py`
+
+--------------
 
 The :mod:`weakref` module allows the Python programmer to create :dfn:`weak
 references` to objects.