Cita APA (7a ed.)

Gerken, T., & Ratschiller, T. (2000). Web Application Development with PHP 4.0. Sams Pearson Education [distributor].

Cita Chicago Style (17a ed.)

Gerken, Till, y Tobias Ratschiller. Web Application Development with PHP 4.0. Indianapolis : Old Tappan: Sams Pearson Education [distributor], 2000.

Cita MLA (8a ed.)

Gerken, Till, y Tobias Ratschiller. Web Application Development with PHP 4.0. Sams Pearson Education [distributor], 2000.