Cohen, A. (1947). Time study and common sense: A critical study of conceptions and methods with suggestions for improvement. Macdonald.
Dyfyniad Arddull ChicagoCohen, Abraham. Time Study and Common Sense: A Critical Study of Conceptions and Methods with Suggestions for Improvement. London: Macdonald, 1947.
Dyfyniad MLACohen, Abraham. Time Study and Common Sense: A Critical Study of Conceptions and Methods with Suggestions for Improvement. Macdonald, 1947.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.