Guffey, M. E. (2010). Essentials of business communication 2nd ed. Cengage Learning.
Chicagoスタイル(17版)引用形式Guffey, Mary Ellen. Essentials of Business Communication 2nd Ed. Cengage Learning, 2010.
MLA(8版)引用形式Guffey, Mary Ellen. Essentials of Business Communication 2nd Ed. Cengage Learning, 2010.
警告: この引用は必ずしも正確ではありません.