APA (7th ed.) Citation

Helmke, M. (2012). Ubuntu unleashed (2012 edition.). Sams.

Chicago Style (17th ed.) Citation

Helmke, Matthew. Ubuntu Unleashed. 2012 edition. Indianapolis, Ind: Sams, 2012.

MLA (8th ed.) Citation

Helmke, Matthew. Ubuntu Unleashed. 2012 edition. Sams, 2012.

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