(2011). The definitive guide to Drupal 7. New York: Apress.
Trích dẫn kiểu ChicagoThe Definitive Guide to Drupal 7. New York: Apress, 2011.
MLA引文The Definitive Guide to Drupal 7. New York: Apress, 2011.
警告：這些引文格式不一定是100％准確.
APA引文