Cita APA

Verderber, R. F., & Sellnow, D. D. (2008). Effective speaking. Belmont, CA: Thomson/Wadsworth.

Chicago Style Citation

Verderber, Rudolph F., i Deanna D. Sellnow. Effective Speaking. Belmont, CA: Thomson/Wadsworth, 2008.

Cita MLA

Verderber, Rudolph F., i Deanna D. Sellnow. Effective Speaking. Belmont, CA: Thomson/Wadsworth, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.