APA-viite (7. p.)
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..
Chicago-viite (17. p.)
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.
MLA-viite (9. p.)
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.
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