Dyfyniad APA

Gordon,Geoffrey. (1997). System simulation (2nd ed.). Prentice-Hall.

Dyfyniad Arddull Chicago

Gordon,Geoffrey. System Simulation. 2nd ed. New Delhi: Prentice-Hall, 1997.

Dyfyniad MLA

Gordon,Geoffrey. System Simulation. 2nd ed. Prentice-Hall, 1997.

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