Gaya APA

Folkman, J, H, Z, J. (2004). The Handbook for Leaders: 24 Lessons for Extraordinary Leadership . Amerika: Mcgraw-Hill Education.

Gaya MLA

Folkman, John, H., Zenger,, Joseph. "The Handbook for Leaders: 24 Lessons for Extraordinary Leadership". Amerika: Mcgraw-Hill Education, 2004. Text.