Cita APA (7th ed.)

Guffey, M. E. (2016). Essentials of business communication (Tenth edition.). Cengage Learning.

Cita Chicago (17th ed.)

Guffey, Mary Ellen. Essentials of Business Communication. Tenth edition. Boston, MA: Cengage Learning, 2016.

Cita MLA (9th ed.)

Guffey, Mary Ellen. Essentials of Business Communication. Tenth edition. Cengage Learning, 2016.