APA aipamena

Hahner, J. C. (2002). Speaking Clearly: Improving voice and diction. New York: McGraw-Hill.

Chicago Style aipamena

Hahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. New York: McGraw-Hill, 2002.

MLA aipamena

Hahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. New York: McGraw-Hill, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.