APA aipamena

Hahner, J. C. (2004). Speaking clearly: Improving voice and diction. Boston: McGraw-Hill.

Chicago Style aipamena

Hahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. Boston: McGraw-Hill, 2004.

MLA aipamena

Hahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. Boston: McGraw-Hill, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.