Shreves, R. (2011). Drupal 7 themes: Create new themes for your Drupal 7 site with a clean layout and powerful CSS styling = Drupal Seven themes. Packt Pub.
Chicago-Zitierstil (17. Ausg.)Shreves, Ric. Drupal 7 Themes: Create New Themes for Your Drupal 7 Site with a Clean Layout and Powerful CSS Styling = Drupal Seven Themes. Birmingham: Packt Pub, 2011.
MLA-Zitierstil (9. Ausg.)Shreves, Ric. Drupal 7 Themes: Create New Themes for Your Drupal 7 Site with a Clean Layout and Powerful CSS Styling = Drupal Seven Themes. Packt Pub, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.