Cita APA (7a ed.)

Gilmore, W. J. (2001). A programmer's introduction to PHP 4.0. Apress.

Cita Chicago Style (17a ed.)

Gilmore, W. J. A Programmer's Introduction to PHP 4.0. Berkeley, California: Apress, 2001.

Cita MLA (9a ed.)

Gilmore, W. J. A Programmer's Introduction to PHP 4.0. Apress, 2001.