Dyfyniad APA
Whitten, J. L., & Bentley, L. D. (1986). Systems analysis and design methods (7th ed.). McGraw-Hill/Irwin.
Dyfyniad Arddull Chicago
Whitten, Jeffrey L., and Lonnie D. Bentley. Systems Analysis and Design Methods. 7th ed. New delhi : New york: McGraw-Hill/Irwin, 1986.
Dyfyniad MLA
Whitten, Jeffrey L., and Lonnie D. Bentley. Systems Analysis and Design Methods. 7th ed. McGraw-Hill/Irwin, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.