Dyfyniad APA

Wheeler, E. (1971). Tested retail selling. Wilco Publishing House.

Dyfyniad Arddull Chicago

Wheeler, Elmer. Tested Retail Selling. Bombay: Wilco Publishing House, 1971.

Dyfyniad MLA

Wheeler, Elmer. Tested Retail Selling. Wilco Publishing House, 1971.

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