Dyfyniad APA

Dumont, R. A., & Lannon, J. M. (1987). Business communications (2nd ed.). Little, Brown.

Dyfyniad Arddull Chicago

Dumont, Raymond A., and John M. Lannon. Business Communications. 2nd ed. Boston: Little, Brown, 1987.

Dyfyniad MLA

Dumont, Raymond A., and John M. Lannon. Business Communications. 2nd ed. Little, Brown, 1987.

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