Dyfyniad APA

Poe, R. W. (1994). McGraw Hill handbook of business letters (3rd ed.). Mc Graw Hill.

Dyfyniad Arddull Chicago

Poe, Roy W. McGraw Hill Handbook of Business Letters. 3rd ed. New York: Mc Graw Hill, 1994.

Dyfyniad MLA

Poe, Roy W. McGraw Hill Handbook of Business Letters. 3rd ed. Mc Graw Hill, 1994.

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