Shurter, R. L. (1971). Written communication in business (3rd ed.). McGraw-Hill.
Dyfyniad Arddull ChicagoShurter, Robert L. Written Communication in Business. 3rd ed. Tokyo: McGraw-Hill, 1971.
Dyfyniad MLAShurter, Robert L. Written Communication in Business. 3rd ed. McGraw-Hill, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.