James, T. (2012). Drupal 7 business solutions: Build powerful website features for your business. Packt Pub.
Chicago-Zitierstil (17. Ausg.)James, Trevor. Drupal 7 Business Solutions: Build Powerful Website Features for Your Business. Birmingham, U.K: Packt Pub, 2012.
MLA-Zitierstil (9. Ausg.)James, Trevor. Drupal 7 Business Solutions: Build Powerful Website Features for Your Business. Packt Pub, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.