APA (7th ed.) Citation

O'Leary, T. J., & O'Leary, L. I. (2004). Computing today. McGraw-Hill.

Chicago Style (17th ed.) Citation

O'Leary, Timothy J., and Linda I. O'Leary. Computing Today. Boston: McGraw-Hill, 2004.

MLA (8th ed.) Citation

O'Leary, Timothy J., and Linda I. O'Leary. Computing Today. McGraw-Hill, 2004.