Halfman, R. L. (1962). Dynamics: :systems, variation, methods and relativity. Addison - Wesley.
Dyfyniad Arddull ChicagoHalfman, Robert L. Dynamics: :systems, Variation, Methods and Relativity. London: Addison - Wesley, 1962.
Dyfyniad MLAHalfman, Robert L. Dynamics: :systems, Variation, Methods and Relativity. Addison - Wesley, 1962.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.