APA (7th ed.) Citation

Knaster, S., Malik, W., & Dalrymple, M. (2012). Learn Objective-C on the Mac: For iOS and OS X. Apress : Imprint: Apress.

Chicago Style (17th ed.) Citation

Knaster, Scott, Waqar Malik, and Mark Dalrymple. Learn Objective-C on the Mac: For IOS and OS X. Berkeley, CA: Apress : Imprint: Apress, 2012.

MLA (8th ed.) Citation

Knaster, Scott, et al. Learn Objective-C on the Mac: For IOS and OS X. Apress : Imprint: Apress, 2012.