Shafik,Davey, & Ramsey,Ben. (2007). PHP/architect's Zend PHP 5 certification study guide (2nd ed.). Marco Tabini.
Citazione stile Chigago Style (17a edizione)Shafik,Davey, e Ramsey,Ben. PHP/architect's Zend PHP 5 Certification Study Guide. 2nd ed. Toronto: Marco Tabini, 2007.
Citatione MLA (8a ed.)Shafik,Davey, e Ramsey,Ben. PHP/architect's Zend PHP 5 Certification Study Guide. 2nd ed. Marco Tabini, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.