BENNIS WARREN. (2001). FUTURE OF LEADERSHIP. JOSSEY-BASS PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)BENNIS WARREN. FUTURE OF LEADERSHIP. SANFRANCISCO: JOSSEY-BASS PUBLICATIONS, 2001.
Lua MLA (9ú heag.)BENNIS WARREN. FUTURE OF LEADERSHIP. JOSSEY-BASS PUBLICATIONS, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.