Drucker, P. F. (1991). Innovation and entrepreneurship: Practice and principles. Affiliated East-West Press PVT Ltd..
Citazione stile Chigago Style (17a edizione)Drucker, P. F. Innovation and Entrepreneurship: Practice and Principles. New Delhi: Affiliated East-West Press PVT Ltd., 1991.
Citatione MLA (9a ed.)Drucker, P. F. Innovation and Entrepreneurship: Practice and Principles. Affiliated East-West Press PVT Ltd., 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.