Cita APA (7a ed.)

Sheppard, R. (2009). Mac OS X Snow Leopard (1st edition.). Wiley.

Cita Chicago Style (17a ed.)

Sheppard, Rob. Mac OS X Snow Leopard. 1st edition. Indianapolis, IN: Wiley, 2009.

Cita MLA (9a ed.)

Sheppard, Rob. Mac OS X Snow Leopard. 1st edition. Wiley, 2009.