Cita APA (7a ed.)

Kochan, S., & Kochan, S. G. (2009). Programming in Objective-C 2.0 (1st edition.). Addison-Wesley Professional.

Cita Chicago Style (17a ed.)

Kochan, Stephen, y Stephen G. Kochan. Programming in Objective-C 2.0. 1st edition. [United States?]: Addison-Wesley Professional, 2009.

Cita MLA (9a ed.)

Kochan, Stephen, y Stephen G. Kochan. Programming in Objective-C 2.0. 1st edition. Addison-Wesley Professional, 2009.