APA (7th ed.) Citation

Helmke, M. (2012). Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth Edition (8th edition.). Sams.

Chicago Style (17th ed.) Citation

Helmke, Matthew. Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth Edition. 8th edition. Sams, 2012.

MLA (9th ed.) Citation

Helmke, Matthew. Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth Edition. 8th edition. Sams, 2012.

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