Stephenson, J. (1977). Principles and Practice of Commercial Correspondance (3rd ed.). wheeler.
Chicago Style aipamenaStephenson, James. Principles and Practice of Commercial Correspondance. 3rd ed. Allahabad: wheeler, 1977.
MLA aipamenaStephenson, James. Principles and Practice of Commercial Correspondance. 3rd ed. wheeler, 1977.
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