Gaya APA

Dubrin, A, , J. (2013). Principles of Leadership ED-7 (ED-7). Canada: Canada : South-Western Cengage Learning, 2013.

Gaya MLA

Dubrin, Andrew, , J.. "Principles of Leadership ED-7". ED-7 Canada: Canada : South-Western Cengage Learning, 2013, 2013. Text.