Cita APA (7th ed.)

VanDyk, J. K., & Westgate, M. (2007). Pro Drupal development. Apress.

Cita Chicago (17th ed.)

VanDyk, John K., i Matt Westgate. Pro Drupal Development. [Berkeley, Calif.]: Apress, 2007.

Cita MLA (9th ed.)

VanDyk, John K., i Matt Westgate. Pro Drupal Development. Apress, 2007.