APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.