Gaya APA

Hiebert, M., Klatt, B. (2001). THE ENCYCLOPEDIA OF LEADERSHIP A PRACTICAL GUIDE TO POPULAR LEADERSHIP THEORIES AND TECHNIQUES . USA: McGraw-Hill.

Gaya MLA

Hiebert, Murray., Klatt, Bruce. "THE ENCYCLOPEDIA OF LEADERSHIP A PRACTICAL GUIDE TO POPULAR LEADERSHIP THEORIES AND TECHNIQUES". USA: McGraw-Hill, 2001. Text.