DRUCKER PETER F. (1967). MANAGING FOR RESULTS. PAN BOOKS LTD.
Lua i Stíl Chicago (17ú heag.)DRUCKER PETER F. MANAGING FOR RESULTS. LONDON: PAN BOOKS LTD, 1967.
Lua MLA (9ú heag.)DRUCKER PETER F. MANAGING FOR RESULTS. PAN BOOKS LTD, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.