APA (7th ed.) Citation

Schalk, M. (2012). Apple OS X Mountain Lion (1st edition.). Infinite Skills.

Chicago Style (17th ed.) Citation

Schalk, Matt. Apple OS X Mountain Lion. 1st edition. Infinite Skills, 2012.

MLA (9th ed.) Citation

Schalk, Matt. Apple OS X Mountain Lion. 1st edition. Infinite Skills, 2012.

Warning: These citations may not always be 100% accurate.