VanDyk, J. K., & Westgate, M. (2007). Pro Drupal development. Apress.
Chicago Style aipamenaVanDyk, John K., and Matt Westgate. Pro Drupal Development. [Berkeley, Calif.]: Apress, 2007.
MLA aipamenaVanDyk, John K., and Matt Westgate. Pro Drupal Development. Apress, 2007.
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