Cita APA

Verderber, K. S., Sellnow, D. D., & Verderber, R. F. (2017). Speak3 (Third edition.). Cengage Learning.

Citación estilo Chicago

Verderber, Kathleen S., Deanna D. Sellnow, and Rudolph F. Verderber. Speak3. Third edition. Boston, MA: Cengage Learning, 2017.

Cita MLA

Verderber, Kathleen S., et al. Speak3. Third edition. Cengage Learning, 2017.