Dyfyniad APA

Ernest, J. W. (1971). Creative selling. Gregg division Mac grow hill.

Dyfyniad Arddull Chicago

Ernest, John W. Creative Selling. New York: Gregg division Mac grow hill, 1971.

Dyfyniad MLA

Ernest, John W. Creative Selling. Gregg division Mac grow hill, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.