Shafik,Davey, & Ramsey,Ben. (2007). PHP/architect's Zend PHP 5 certification study guide (2nd ed.). Marco Tabini.
Čikaški stil citiranja (17. izdanje)Shafik,Davey, i Ramsey,Ben. PHP/architect's Zend PHP 5 Certification Study Guide. 2nd ed. Toronto: Marco Tabini, 2007.
MLA način citiranja (8. izdanje)Shafik,Davey, i Ramsey,Ben. PHP/architect's Zend PHP 5 Certification Study Guide. 2nd ed. Marco Tabini, 2007.
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