Cita APA (7a ed.)

Sklar, D. (2004). Learning PHP 5 (1st edition.). O'Reilly.

Cita Chicago Style (17a ed.)

Sklar, David. Learning PHP 5. 1st edition. Beijing: O'Reilly, 2004.

Cita MLA (9a ed.)

Sklar, David. Learning PHP 5. 1st edition. O'Reilly, 2004.