Tomlinson, T. (2012). Beginning Drupal 7. Apress.
Chicago Style aipamenaTomlinson, Todd. Beginning Drupal 7. Apress, 2012.
MLA aipamenaTomlinson, Todd. Beginning Drupal 7. Apress, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena