Cita APA (7th ed.)
O'Leary, T. J. (1992). Computing essentials: Annual Edition 1992-1993. McGraw-Hill.
Cita Chicago (17th ed.)
O'Leary, Timothy J. Computing Essentials: Annual Edition 1992-1993. New York: McGraw-Hill, 1992.
Cita MLA (9th ed.)
O'Leary, Timothy J. Computing Essentials: Annual Edition 1992-1993. McGraw-Hill, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.