diff --git a/wiki/unix/unix.m4 b/wiki/unix/unix.m4
index 8c32955..a6b05a0 100644
--- a/wiki/unix/unix.m4
+++ b/wiki/unix/unix.m4
@@ -74,3 +74,8 @@ _subheader(`V6')
 _bibliography(`
 _bentr(`_link(`Unix Sixth Edition root tree', `https://minnie.tuhs.org/cgi-bin/utree.pl?file=V6')')
 ')
+
+_subheader(`V7')
+_bibliography(`
+_bentr(`_link(`Unix Advertising', `https://archive.ph/20130102004255/http://cm.bell-labs.com/cm/cs/who/dmr/unixad.html') (_link(`Original link', `http://cm.bell-labs.com/cm/cs/who/dmr/unixad.html'))')
+')