Gaya APA

Barker, L, L., Roach, I, G, D. (2002). Communication . Boston: Boston: Allyn and Bacon; 2002.

Gaya MLA

Barker, Larry, L., Roach, I., Gaut,, Deborah. "Communication". Boston: Boston: Allyn and Bacon; 2002, 2002. Text.