APA aipamena

Ehrlich, H. (1992). Writing effective speeches. Paragone.

Chicago Style aipamena

Ehrlich, Henry. Writing Effective Speeches. New york: Paragone, 1992.

MLA aipamena

Ehrlich, Henry. Writing Effective Speeches. Paragone, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.