Dyfyniad APA

Kernan, J. B., William P Dommermeeth, & Montrose S Sommers. (1970). Promotion. McGraw-hilll book company.

Dyfyniad Arddull Chicago

Kernan, Jeromes B., William P Dommermeeth, and Montrose S Sommers. Promotion. New York: McGraw-hilll book company, 1970.

Dyfyniad MLA

Kernan, Jeromes B., et al. Promotion. McGraw-hilll book company, 1970.

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