Verderber R. F., Verderber K. S., . (2002). Communicate!. New York: Thomson South-Western.
Verderber Rudolph F, Verderber Kathleen S, . 2002. Communicate!. New York: Thomson South-Western.
Verderber Rudolph F, Verderber Kathleen S, . Communicate!. New York: Thomson South-Western. 2002.
