Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Lerdorf, Rasmus, y Kevin Tatroe. Programming PHP. Sebastopol, CA: O'Reilly & Associates, Inc, 2002.

Cita MLA (9a ed.)

Lerdorf, Rasmus, y Kevin Tatroe. Programming PHP. O'Reilly & Associates, Inc, 2002.