Westwater, F. L., & Waddell, W. A. (1968). An introduction to servomechanisms. English Universities press.
Dyfyniad Arddull ChicagoWestwater, F L., and W A. Waddell. An Introduction to Servomechanisms. London: English Universities press, 1968.
Dyfyniad MLAWestwater, F L., and W A. Waddell. An Introduction to Servomechanisms. English Universities press, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.