Helmke, M., Graner, A., Rankin, K., Hill, B. M., & Bacon, J. (2012). The official Ubuntu book (7th ed.). Prentice Hall.
Chicago Style (17th ed.) CitationHelmke, Matthew, Amber Graner, Kyle Rankin, Benjamin Mako Hill, and Jono Bacon. The Official Ubuntu Book. 7th ed. Upper Saddle River, NJ: Prentice Hall, 2012.
MLA (8th ed.) CitationHelmke, Matthew, et al. The Official Ubuntu Book. 7th ed. Prentice Hall, 2012.
Warning: These citations may not always be 100% accurate.