Dyfyniad APA

HAWRYSZKIEWYCZ, I. (1994). Introduction to systems analysis and design.-ed.3. Prentice Hall.

Dyfyniad Arddull Chicago

HAWRYSZKIEWYCZ, I.T. Introduction to Systems Analysis and Design.-ed.3. Sydney: Prentice Hall, 1994.

Dyfyniad MLA

HAWRYSZKIEWYCZ, I.T. Introduction to Systems Analysis and Design.-ed.3. Prentice Hall, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.