APA (7th ed.) Citation

Hudson, P. A., & Hudson, A. C. (2007). Ubuntu unleashed (2nd ed.). Sams.

Chicago Style (17th ed.) Citation

Hudson, Paul Author, and Andrew Contributor Hudson. Ubuntu Unleashed. 2nd ed. [Place of publication not identified]: Sams, 2007.

MLA (9th ed.) Citation

Hudson, Paul Author, and Andrew Contributor Hudson. Ubuntu Unleashed. 2nd ed. Sams, 2007.