Tonne, H. A. .. a. (1965). Methods of teaching business subjects/3e (3rd ed.). McGraw Hill.
Dyfyniad Arddull ChicagoTonne, Herbert A. ...[et al.]. Methods of Teaching Business Subjects/3e. 3rd ed. New York: McGraw Hill, 1965.
Dyfyniad MLATonne, Herbert A. ...[et al.]. Methods of Teaching Business Subjects/3e. 3rd ed. McGraw Hill, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.