APA (7th ed.) Citation

O'Leary. (1999). Computing essentials 1999/2000.

Chicago Style (17th ed.) Citation

O'Leary. Computing Essentials 1999/2000. Boston, 1999.

MLA (8th ed.) Citation

O'Leary. Computing Essentials 1999/2000. 1999.

Warning: These citations may not always be 100% accurate.