Aurner, R. R. (1939). Effective business correspondence (2nd ed., abridged.). South-western publishing company.
Chicago Style (17. basım) AtıfAurner, Robert Ray. Effective Business Correspondence. 2nd ed., abridged. Cincinnati, New York: South-western publishing company, 1939.
MLA (9th ed.) AtıfAurner, Robert Ray. Effective Business Correspondence. 2nd ed., abridged. South-western publishing company, 1939.
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