APA (7th ed.) Citation

Richards, R. (2006). Pro PHP XML and Web Services. Robert Richards.

Chicago Style (17th ed.) Citation

Richards, Robert. Pro PHP XML and Web Services. Berkeley, CA: Robert Richards, 2006.

MLA (8th ed.) Citation

Richards, Robert. Pro PHP XML and Web Services. Robert Richards, 2006.

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