Cita APA (7a ed.)

Safari Tech Books Online & Kochan, S. G. A. (2004). Programming in Objective-C (1st edition.). Sams.

Cita Chicago Style (17a ed.)

Safari Tech Books Online y Stephen G Author Kochan. Programming in Objective-C. 1st edition. [Place of publication not identified]: Sams, 2004.

Cita MLA (9a ed.)

Safari Tech Books Online y Stephen G Author Kochan. Programming in Objective-C. 1st edition. Sams, 2004.