Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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