APA (7th ed.) Citation

O Leary, T. J. (2002). Computing essentials 2002-2003Timothy J. O Leary. McGraw-Hill.

Chicago Style (17th ed.) Citation

O Leary, Timothy J. Computing Essentials 2002-2003Timothy J. O Leary. McGraw-Hill, 2002.

MLA (8th ed.) Citation

O Leary, Timothy J. Computing Essentials 2002-2003Timothy J. O Leary. McGraw-Hill, 2002.