APA (7th ed.) Citation

Hodgdon, J. (2012). A programmer's guide to Drupal. O'Reilly Media.

Chicago Style (17th ed.) Citation

Hodgdon, Jennifer. A Programmer's Guide to Drupal. Sebastopol, CA: O'Reilly Media, 2012.

MLA (8th ed.) Citation

Hodgdon, Jennifer. A Programmer's Guide to Drupal. O'Reilly Media, 2012.

Warning: These citations may not always be 100% accurate.