APA-referens (7:e uppl.)
Booker, A. M., & Walters, J. D. (2014). Learning objective-C by developing iPhone games: Leverage Xcode and objective-C to develop iPhone games. Packt Publishing.
Chicago-referens (17:e uppl.)
Booker, Amy M., och Joseph D. Walters. Learning Objective-C by Developing IPhone Games: Leverage Xcode and Objective-C to Develop IPhone Games. Birmingham, England: Packt Publishing, 2014.
MLA-referens (9:e uppl.)
Booker, Amy M., och Joseph D. Walters. Learning Objective-C by Developing IPhone Games: Leverage Xcode and Objective-C to Develop IPhone Games. Packt Publishing, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.