APA-viite (7. p.)

POSNER BARRY Z. (1997). LEADERSHIP CHALLENGE: HOW TO KEEP GETTING--- IN ORGANIZATIONS. JOSSEY-BASS PUBLICATIONS.

Chicago-viite (17. p.)

POSNER BARRY Z. LEADERSHIP CHALLENGE: HOW TO KEEP GETTING--- IN ORGANIZATIONS. SAN FRANCISCO: JOSSEY-BASS PUBLICATIONS, 1997.

MLA-viite (9. p.)

POSNER BARRY Z. LEADERSHIP CHALLENGE: HOW TO KEEP GETTING--- IN ORGANIZATIONS. JOSSEY-BASS PUBLICATIONS, 1997.