diff --git a/share/sgml/bibliography.sgml b/share/sgml/bibliography.sgml
index 7522b702e5..dc344b5ce4 100644
--- a/share/sgml/bibliography.sgml
+++ b/share/sgml/bibliography.sgml
@@ -1062,6 +1062,26 @@
     </biblioset>
   </biblioentry>
 
+  <biblioentry id="absolutebsd">
+    <biblioset relation="book">
+      <title>Absolute BSD</title>
+
+      <author>
+        <firstname>Michael</firstname>
+
+        <surname>Lucas</surname>
+      </author>
+
+      <publisher>
+        <publishername>No Starch Press</publishername>
+      </publisher>
+
+      <pubdate>June 2002</pubdate>
+
+      <isbn>ISBN 1-886411-74-3</isbn>
+    </biblioset>
+  </biblioentry>
+
   <biblioentry id="biblio-ccppusersjournal">
     <biblioset relation="magazine">
       <title>The C/C++ Users Journal</title>