APA Citation

Matthew Helmke. (2011). Ubuntu unleashed: 2013 edition. Usa: Sams.

Chicago Style Citation

Matthew Helmke. Ubuntu Unleashed: 2013 Edition. Usa: Sams, 2011.

MLA Citation

Matthew Helmke. Ubuntu Unleashed: 2013 Edition. Usa: Sams, 2011.

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