Gaya APA

C.Weaver, P., Weaver, R, G. (1977). Persuasive writing : a manager`s guide to effective letters and reports . New York: Free Press.

Gaya MLA

C.Weaver, Patricia., Weaver, Robert, G.. "Persuasive writing : a manager`s guide to effective letters and reports". New York: Free Press, 1977. Text.