Цитирование APA (7-е изд.)
Varkonyi, R. (2012). Drupal Rules how-to: Discover the power of the Rules framework to turn your Drupal 7 installation into an action-based, interactive application. Packt Pub..
Цитирование в стиле Чикаго (17-е изд.)
Varkonyi, Robert. Drupal Rules How-to: Discover the Power of the Rules Framework to Turn Your Drupal 7 Installation into an Action-based, Interactive Application. Birminghan, UK: Packt Pub., 2012.
Цитирование MLA (9-е изд.)
Varkonyi, Robert. Drupal Rules How-to: Discover the Power of the Rules Framework to Turn Your Drupal 7 Installation into an Action-based, Interactive Application. Packt Pub., 2012.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.