Cita APA (7a ed.)

Ratschiller, T., & Gerken, T. (2000). Web application development with PHP 4.0. New Riders.

Cita Chicago Style (17a ed.)

Ratschiller, Tobias, y Till Gerken. Web Application Development with PHP 4.0. Indianapolis: New Riders, 2000.

Cita MLA (9a ed.)

Ratschiller, Tobias, y Till Gerken. Web Application Development with PHP 4.0. New Riders, 2000.