diff --git a/www/conservancy/static/linux-compliance/about.html b/www/conservancy/static/linux-compliance/about.html
index 62dbce373e63a0f5cdfe18c6a0f95f44859e35a8..ec01b2e49dd452cb5fabf815e3055d5bf73e5b1d 100644
--- a/www/conservancy/static/linux-compliance/about.html
+++ b/www/conservancy/static/linux-compliance/about.html
@@ -34,9 +34,12 @@ support of relevant copyright holders.</p>
   collaboration with the Free Software Foundation (FSF),
   which <a href="/news/2014/nov/07/copyleft-org/">Conservancy formally
   launched in fall 2014</a>.  The Guide includes tutorial materials about
-  copyleft and compliance with copyleft licenses that has been developed and
-  improved since 2002.  Conservancy and FSF develop the Guide, which is
-  itself copylefted, collaboratively in public.</p>
+  copyleft and compliance with copyleft licenses,
+  including <a href="https://copyleft.org/guide/comprehensive-gpl-guidepa2.html"><cite>A
+  Practical Guide to GPL Compliance</cite></a>.  The materials
+  on <a href="https://copyleft.org/">copyleft.org</a> have been developed and
+  improved since 2002, and are themselves copylefted, and developed
+  collaboratively in public.</p>
 
 <p>Those who are interested in how Conservancy handles GPL enforcement and
   compliance work should read in