APA (7th ed.) Citation

Hess, U., & Karl, G. (2005). PHP 5 (1. Aufl.). bhv.

Chicago Style (17th ed.) Citation

Hess, Uwe, and Günther Karl. PHP 5. 1. Aufl. Bonn: bhv, 2005.

MLA (9th ed.) Citation

Hess, Uwe, and Günther Karl. PHP 5. 1. Aufl. bhv, 2005.

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