APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.