Cita APA (7th ed.)

Osborn, M., Osborn, S., & Osborn, R. (2009). Public speaking (8th ed.). Pearson/Allyn & Bacon.

Cita Chicago (17th ed.)

Osborn, Michael, Suzanne Osborn, i Randall Osborn. Public Speaking. 8th ed. Boston: Pearson/Allyn & Bacon, 2009.

Cita MLA (9th ed.)

Osborn, Michael, et al. Public Speaking. 8th ed. Pearson/Allyn & Bacon, 2009.