Dyfyniad APA
Lawlor Steven C. (1990). Computer information systems (ed.). Harcourt Brace Jovanovich.
Dyfyniad Arddull Chicago
Lawlor Steven C. Computer Information Systems. ed. New York: Harcourt Brace Jovanovich, 1990.
Dyfyniad MLA
Lawlor Steven C. Computer Information Systems. ed. Harcourt Brace Jovanovich, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.