DRUCKER PETER F. (1985). INNOVATION AND ENTREPRENEURSHIP PRACTICE AND PRINCIPLES. HEINEMAN OXFORD & IBM PUB CO.PVT LTD.
Lua i Stíl Chicago (17ú heag.)DRUCKER PETER F. INNOVATION AND ENTREPRENEURSHIP PRACTICE AND PRINCIPLES. LONDON: HEINEMAN OXFORD & IBM PUB CO.PVT LTD, 1985.
Lua MLA (9ú heag.)DRUCKER PETER F. INNOVATION AND ENTREPRENEURSHIP PRACTICE AND PRINCIPLES. HEINEMAN OXFORD & IBM PUB CO.PVT LTD, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.