Cita APA

Osborn, M. . .., & Osborn,Suzanne. (2006). Public speaking (6th ed.). Biztantra.

Citación estilo Chicago

Osborn, Michael ., y Osborn,Suzanne. Public Speaking. 6th ed. New Delhi: Biztantra, 2006.

Cita MLA

Osborn, Michael ., y Osborn,Suzanne. Public Speaking. 6th ed. Biztantra, 2006.