Richard A kaumeyer. (1985). How to write and speak in business. New York: Van Nostrand Reinhold.
استشهاد بنمط شيكاغوRichard A kaumeyer. How to Write and Speak in Business. New York: Van Nostrand Reinhold, 1985.
MLA استشهادRichard A kaumeyer. How to Write and Speak in Business. New York: Van Nostrand Reinhold, 1985.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.