Dyfyniad APA

Reid, J. M., & Silleck, A. (1990). Better business letters: A self-instructional book to develop skill in writing (4th ed.). AddisonWesley Pub. Co., Inc.

Dyfyniad Arddull Chicago

Reid, James M., and Anne Silleck. Better Business Letters: A Self-instructional Book to Develop Skill in Writing. 4th ed. Reading, Mass: AddisonWesley Pub. Co., Inc, 1990.

Dyfyniad MLA

Reid, James M., and Anne Silleck. Better Business Letters: A Self-instructional Book to Develop Skill in Writing. 4th ed. AddisonWesley Pub. Co., Inc, 1990.

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