Dyfyniad APA
O'Leary, T. J. (1992). Computing essentials: Annual Edition 1992-1993. McGraw-Hill.
Dyfyniad Arddull Chicago
O'Leary, Timothy J. Computing Essentials: Annual Edition 1992-1993. New York: McGraw-Hill, 1992.
Dyfyniad MLA
O'Leary, Timothy J. Computing Essentials: Annual Edition 1992-1993. McGraw-Hill, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.