APA (7th ed.) Citation

Trachtenberg, A. (2004). Upgrading to PHP 5. O'Reilly.

Chicago Style (17th ed.) Citation

Trachtenberg, Adam. Upgrading to PHP 5. Sebastopol, CA: O'Reilly, 2004.

MLA (8th ed.) Citation

Trachtenberg, Adam. Upgrading to PHP 5. O'Reilly, 2004.

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