Dyfyniad APA

Whitten, J. L., Bentley, L. D., & Barlow, V. M. (1989). Systems analysis & design methods (2nd ed.). Irwin.

Dyfyniad Arddull Chicago

Whitten, Jeffrey L., Lonnie D. Bentley, and Victor M. Barlow. Systems Analysis & Design Methods. 2nd ed. Homewood, Ill: Irwin, 1989.

Dyfyniad MLA

Whitten, Jeffrey L., et al. Systems Analysis & Design Methods. 2nd ed. Irwin, 1989.

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