Cita APA (7th ed.)

Osborn, M., Osborn, S., & Osborn, R. (2009). Public speaking (2nd Custom ed. for Pepperdine Univ.). Pearson Custom Publishing.

Cita Chicago (17th ed.)

Osborn, Michael, Suzanne Osborn, i Randall Osborn. Public Speaking. 2nd Custom ed. for Pepperdine Univ. New York: Pearson Custom Publishing, 2009.

Cita MLA (9th ed.)

Osborn, Michael, et al. Public Speaking. 2nd Custom ed. for Pepperdine Univ. Pearson Custom Publishing, 2009.