O'Leary, T. J., & O'Leary, L. I. (2002). Computing essentials 2002-2003: Complete. Boston, Mass. : McGraw-Hill/Irwin.
Lua i Stíl Chicago (17ú heag.)O'Leary, Timothy J., agus Linda I. O'Leary. Computing Essentials 2002-2003: Complete. Boston, Mass. : McGraw-Hill/Irwin, 2002.
Lua MLA (9ú heag.)O'Leary, Timothy J., agus Linda I. O'Leary. Computing Essentials 2002-2003: Complete. Boston, Mass. : McGraw-Hill/Irwin, 2002.
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