Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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