Dyfyniad APA

ROWELL, D., & WORMLEY, D. N. (1997). System dynamics: An introduction. Prentice Hall.

Dyfyniad Arddull Chicago

ROWELL, Derek, and David N. WORMLEY. System Dynamics: An Introduction. New York: Prentice Hall, 1997.

Dyfyniad MLA

ROWELL, Derek, and David N. WORMLEY. System Dynamics: An Introduction. Prentice Hall, 1997.

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