Cita APA (7th ed.)

Allen, J., & Hornberger, C. (2002). Mastering PHP 4.1. Sybex.

Cita Chicago (17th ed.)

Allen, Jeremy, i Charles Hornberger. Mastering PHP 4.1. San Francisco, CA: Sybex, 2002.

Cita MLA (9th ed.)

Allen, Jeremy, i Charles Hornberger. Mastering PHP 4.1. Sybex, 2002.