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

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

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