Style de citation APA (7e éd.)

Guffey, M. E., & Loewy, D. (2010). Essentials of business communication (8th ed.). South-Western/Cengage Learning.

Style de citation Chicago (17e éd.)

Guffey, Mary Ellen, et Dana Loewy. Essentials of Business Communication. 8th ed. Mason, Ohio: South-Western/Cengage Learning, 2010.

Style de citation MLA (9e éd.)

Guffey, Mary Ellen, et Dana Loewy. Essentials of Business Communication. 8th ed. South-Western/Cengage Learning, 2010.