Cita APA (7a ed.)

Ray, J., & Ray, W. (2012). Sams teach yourself Xcode 4 in 24 hours (1st edition.). Sams.

Cita Chicago Style (17a ed.)

Ray, John, y William Ray. Sams Teach Yourself Xcode 4 in 24 Hours. 1st edition. Indianapolis, Ind.: Sams, 2012.

Cita MLA (9a ed.)

Ray, John, y William Ray. Sams Teach Yourself Xcode 4 in 24 Hours. 1st edition. Sams, 2012.