Cita APA (7a ed.)

Hybels, S., & Weaver Richard L. (2007). Communicating Effectively (8th ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Hybels, Saundra, y Weaver Richard L. Communicating Effectively. 8th ed. New York: McGraw-Hill, 2007.

Cita MLA (9a ed.)

Hybels, Saundra, y Weaver Richard L. Communicating Effectively. 8th ed. McGraw-Hill, 2007.