Cita APA (7th ed.)
Osborn, M., & Osborn, S. (1988). Public speaking. Houghton Mifflin.
Cita Chicago (17th ed.)
Osborn, Michael, i Suzanne Osborn. Public Speaking. Boston: Houghton Mifflin, 1988.
Cita MLA (9th ed.)
Osborn, Michael, i Suzanne Osborn. Public Speaking. Houghton Mifflin, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.