Lesikar, R. V. V. (1991). Basic business communication.: 5th ed. Irwin.
Chicagoスタイル(17版)引用形式Lesikar, Raymond V. Vincent. Basic Business Communication.: 5th Ed. Homewood, IL: Irwin, 1991.
MLA(9版)引用形式Lesikar, Raymond V. Vincent. Basic Business Communication.: 5th Ed. Irwin, 1991.
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