Tiggeler, E. (2010). Joomla! 1.5: Beginner's guide : build and maintain impressive user-friendly web sites the fast and easy way with Joomla! 1.5. Packt Pub..
Chicago-referens (17:e uppl.)Tiggeler, Eric. Joomla! 1.5: Beginner's Guide : Build and Maintain Impressive User-friendly Web Sites the Fast and Easy Way with Joomla! 1.5. Birmingham, U.K.: Packt Pub., 2010.
MLA-referens (9:e uppl.)Tiggeler, Eric. Joomla! 1.5: Beginner's Guide : Build and Maintain Impressive User-friendly Web Sites the Fast and Easy Way with Joomla! 1.5. Packt Pub., 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.