APA

Cohen W. A., . (1984). Direct response marketing: an entrepreneurial approach. New York: Wiley.

Chicago

Cohen William A, . 1984. Direct response marketing: an entrepreneurial approach. New York: Wiley.

Harvard

Cohen W. A., . (1984). Direct response marketing: an entrepreneurial approach. New York: Wiley.

MLA

Cohen William A, . Direct response marketing: an entrepreneurial approach. New York: Wiley. 1984.