BENNIS WARREN. (1985). LEADERS THE STRATEGIES FOR TAKING CHARGE. HARPER & ROW.
Lua i Stíl Chicago (17ú heag.)BENNIS WARREN. LEADERS THE STRATEGIES FOR TAKING CHARGE. NEW YORK: HARPER & ROW, 1985.
Lua MLA (9ú heag.)BENNIS WARREN. LEADERS THE STRATEGIES FOR TAKING CHARGE. HARPER & ROW, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.