Lucas, S. E. (2004). The art of pubilic speaking (8th ed.). New York: McGraw Hill.
Chicago Style aipamenaLucas, Stephen E. The Art of Pubilic Speaking. 8th ed. New York: McGraw Hill, 2004.
MLA aipamenaLucas, Stephen E. The Art of Pubilic Speaking. 8th ed. New York: McGraw Hill, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.