Drucker, P. F. (1991). Innovation & entrepreneurship. Altrliated east- west.
Citazione stile Chigago Style (17a edizione)Drucker, Peter F. Innovation & Entrepreneurship. New delhi: Altrliated east- west, 1991.
Citatione MLA (9a ed.)Drucker, Peter F. Innovation & Entrepreneurship. Altrliated east- west, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.