Cita APA (7th ed.)

Lerdorf, R., & Tatroe, K. (2002). Programming PHP. O'Reilly.

Cita Chicago (17th ed.)

Lerdorf, Rasmus, i Kevin Tatroe. Programming PHP. Sebastopol: O'Reilly, 2002.

Cita MLA (9th ed.)

Lerdorf, Rasmus, i Kevin Tatroe. Programming PHP. O'Reilly, 2002.