Dyfyniad APA

Norton, H. R. (1919). A textbook on retail selling. Ginn and Company.

Dyfyniad Arddull Chicago

Norton, Helen Rich. A Textbook on Retail Selling. Boston : New York [etc.]: Ginn and Company, 1919.

Dyfyniad MLA

Norton, Helen Rich. A Textbook on Retail Selling. Ginn and Company, 1919.

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