APA (7th ed.) Citation

Clark, J. (2010). Tapworthy designing great iPhone apps / Josh Clark: Designing great iPhone apps. O'Reilly.

Chicago Style (17th ed.) Citation

Clark, Josh. Tapworthy Designing Great IPhone Apps / Josh Clark: Designing Great IPhone Apps. Sebastapol, CA: O'Reilly, 2010.

MLA (9th ed.) Citation

Clark, Josh. Tapworthy Designing Great IPhone Apps / Josh Clark: Designing Great IPhone Apps. O'Reilly, 2010.

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