APA način citiranja (7. izdanje)

Zend Technologies & Herbert, S. (2005). Zend PHP certification study guide. Sams Pub..

Čikaški stil citiranja (17. izdanje)

Zend Technologies i Stuart Herbert. Zend PHP Certification Study Guide. Indianapolis, Ind: Sams Pub., 2005.

MLA način citiranja (8. izdanje)

Zend Technologies i Stuart Herbert. Zend PHP Certification Study Guide. Sams Pub., 2005.