Webster's guide to business correspondence
Merriam-Webster, Inc., 1988
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Merriam-Webster's guide to business correspondence : a merriam-webster
Merriam-Webster's, Incorporated, 1993
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Webster handy college dictionary : includes abbreviations, geographical names foreign words and phrases / editor, Albert and Loy Morehead
Signet Book, 1962
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The New American Webster handy college dictionary : includes abbreviations, geographical names, foreign words and phrases
Albert, Loy Morehead, editors
New American Library, 1972
Buku Referensi
Atkinson, Toby D.
Merriam-Webster's guide to international business communications
Springfield, 1994
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