Cita APA (7th ed.)
Proffitt, B. (2008). Introducing Ubuntu: Desktop Linux. Thomson Course Technology.
Cita Chicago (17th ed.)
Proffitt, Brian. Introducing Ubuntu: Desktop Linux. Boston, MA: Thomson Course Technology, 2008.
Cita MLA (9th ed.)
Proffitt, Brian. Introducing Ubuntu: Desktop Linux. Thomson Course Technology, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.