More source links
diff --git a/Doc/library/nntplib.rst b/Doc/library/nntplib.rst
index 0f97806..164f149 100644
--- a/Doc/library/nntplib.rst
+++ b/Doc/library/nntplib.rst
@@ -10,6 +10,10 @@
pair: NNTP; protocol
single: Network News Transfer Protocol
+**Source code:** :source:`Lib/nntplib.py`
+
+--------------
+
This module defines the class :class:`NNTP` which implements the client side of
the Network News Transfer Protocol. It can be used to implement a news reader
or poster, or automated news processors. It is compatible with :rfc:`3977`