Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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