Gaya APA
L., B., D., R., C., A. (1991).
Influence without authority / Allan R. Cohen, David L. Bradford .
New York:
John Wiley n Sons.
Gaya MLA
Bradford, David, L.., Cohen, Allan, R..
"Influence without authority / Allan R. Cohen, David L. Bradford".
New York:
John Wiley n Sons,
1991.
Textbook.