Dyfyniad APA

Ann, P. (1998). McGraw Hill handbook of more business letter. McGraw Hill.

Dyfyniad Arddull Chicago

Ann, Poe. McGraw Hill Handbook of More Business Letter. McGraw Hill, 1998.

Dyfyniad MLA

Ann, Poe. McGraw Hill Handbook of More Business Letter. McGraw Hill, 1998.

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