Hastings, P. G. (1974). Introduction to buisness (2nd ed.). McGraw-Hill.
Dyfyniad Arddull ChicagoHastings, Paul Guiler. Introduction to Buisness. 2nd ed. New York: McGraw-Hill, 1974.
Dyfyniad MLAHastings, Paul Guiler. Introduction to Buisness. 2nd ed. McGraw-Hill, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.