Citazione Stile APA (7a Edizione)
Drucker, P. F. (1993). Innovation and entrepreneurship: Practice and principles. Harper Business.
Citazione stile Chigago Style (17a edizione)
Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. New York: Harper Business, 1993.
Citatione MLA (9a ed.)
Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. Harper Business, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.