APA (7th ed.) Citation

O'Leary, T. J., & O'Leary. (2012). Computing essentials: Making it work for you. McGraw-Hill.

Chicago Style (17th ed.) Citation

O'Leary, Timothy J., and O'Leary. Computing Essentials: Making It Work for You. New York: McGraw-Hill, 2012.

MLA (8th ed.) Citation

O'Leary, Timothy J., and O'Leary. Computing Essentials: Making It Work for You. McGraw-Hill, 2012.