Cita APA (7th ed.)

Osborn, M., & Osborn, S. (1994). Public Speaking (3rd ed.). Houghton Mifflin.

Cita Chicago (17th ed.)

Osborn, Michael, i Suzanne Osborn. Public Speaking. 3rd ed. Boston: Houghton Mifflin, 1994.

Cita MLA (9th ed.)

Osborn, Michael, i Suzanne Osborn. Public Speaking. 3rd ed. Houghton Mifflin, 1994.