Cita APA (7th ed.)

Osborn, S., & Motley, M. T. (1999). Improving communication. Houghton Mifflin.

Cita Chicago (17th ed.)

Osborn, Suzanne, i Michael T. Motley. Improving Communication. Boston, MA: Houghton Mifflin, 1999.

Cita MLA (9th ed.)

Osborn, Suzanne, i Michael T. Motley. Improving Communication. Houghton Mifflin, 1999.