Cita APA (7a ed.)

Duncan, A. (2002). Objective-C: Pocket reference (First edition.). O'Reilly.

Cita Chicago Style (17a ed.)

Duncan, Andy. Objective-C: Pocket Reference. First edition. Sebastopol, California: O'Reilly, 2002.

Cita MLA (9a ed.)

Duncan, Andy. Objective-C: Pocket Reference. First edition. O'Reilly, 2002.