APA (7e ed.) Bronvermelding

Bennett, J. M. (1991). Four powers of communication: Skills for effective learning. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Bennett, J. Michael. Four Powers of Communication: Skills for Effective Learning. New York: McGraw-Hill, 1991.

MLA (9e ed.) Bronvermelding

Bennett, J. Michael. Four Powers of Communication: Skills for Effective Learning. McGraw-Hill, 1991.