Style de citation APA (7e éd.)

Guffey, M. E. (1995). Essentials of business communication (3rd ed.). South-Western College.

Style de citation Chicago (17e éd.)

Guffey, Mary Ellen. Essentials of Business Communication. 3rd ed. Cincinnati, Ohio: South-Western College, 1995.

Style de citation MLA (9e éd.)

Guffey, Mary Ellen. Essentials of Business Communication. 3rd ed. South-Western College, 1995.