Levin & Kirkpatrick. (1965). Quantitative approaches to management. McGraw hill book company.
Dyfyniad Arddull ChicagoLevin and Kirkpatrick. Quantitative Approaches to Management. New York: McGraw hill book company, 1965.
Dyfyniad MLALevin and Kirkpatrick. Quantitative Approaches to Management. McGraw hill book company, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.