APA (7th ed.) Citation

Denny, V. (2012). Drupal 7 Webform Cookbook. Packt Pub.

Chicago Style (17th ed.) Citation

Denny, Vernon. Drupal 7 Webform Cookbook. Birmingham, U.K: Packt Pub, 2012.

MLA (9th ed.) Citation

Denny, Vernon. Drupal 7 Webform Cookbook. Packt Pub, 2012.

Warning: These citations may not always be 100% accurate.