Cita APA (7a ed.)

Helmke, M., Graner, A., Rankin, K., Hill, B. M., & Bacon, J. (2012). The official Ubuntu book (7th ed.). Prentice Hall.

Cita Chicago Style (17a ed.)

Helmke, Matthew, Amber Graner, Kyle Rankin, Benjamin Mako Hill, y Jono Bacon. The Official Ubuntu Book. 7th ed. Upper Saddle River, NJ: Prentice Hall, 2012.

Cita MLA (8a ed.)

Helmke, Matthew, et al. The Official Ubuntu Book. 7th ed. Prentice Hall, 2012.