Cita APA (7a ed.)

Ubuntu Ducumentation Project. (2011). Ubuntu 11.04: Ubuntu classic desktop guide. Fultus.

Cita Chicago Style (17a ed.)

Ubuntu Ducumentation Project. Ubuntu 11.04: Ubuntu Classic Desktop Guide. Palo Alto, Calif.: Fultus, 2011.

Cita MLA (8a ed.)

Ubuntu Ducumentation Project. Ubuntu 11.04: Ubuntu Classic Desktop Guide. Fultus, 2011.