APA-viite (7. p.)
Denny, V. (2012). Drupal 7 webform cookbook: Over 70 recipes for exploiting one of Drupal's more popular contributed modules. Packt Pub..
Chicago-viite (17. p.)
Denny, Vernon. Drupal 7 Webform Cookbook: Over 70 Recipes for Exploiting One of Drupal's More Popular Contributed Modules. Birmingham, U.K.: Packt Pub., 2012.
MLA-viite (9. p.)
Denny, Vernon. Drupal 7 Webform Cookbook: Over 70 Recipes for Exploiting One of Drupal's More Popular Contributed Modules. Packt Pub., 2012.
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