Richard A kaumeyer. (1985). How to write and speak in business. New York: Van Nostrand Reinhold.
Παραπομπή Chicago StyleRichard A kaumeyer. How to Write and Speak in Business. New York: Van Nostrand Reinhold, 1985.
Παραπομπή MLARichard A kaumeyer. How to Write and Speak in Business. New York: Van Nostrand Reinhold, 1985.
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