Graham, C. (1965). Work measurement and cost control. Pergamon.
Dyfyniad Arddull ChicagoGraham, C.F. Work Measurement and Cost Control. Oxford: Pergamon, 1965.
Dyfyniad MLAGraham, C.F. Work Measurement and Cost Control. Pergamon, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.