Hepner, H. (1955). Modern marketing: Dynamics and management. McGraw Hill book co.
Dyfyniad Arddull ChicagoHepner, H.W. Modern Marketing: Dynamics and Management. New York: McGraw Hill book co, 1955.
Dyfyniad MLAHepner, H.W. Modern Marketing: Dynamics and Management. McGraw Hill book co, 1955.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.