APA (7. basım) Alıntı

Drucker, P. F. (1991). Innovation & entrepreneurship. Altrliated east- west.

Chicago Style (17. basım) Atıf

Drucker, Peter F. Innovation & Entrepreneurship. New delhi: Altrliated east- west, 1991.

MLA (9th ed.) Atıf

Drucker, Peter F. Innovation & Entrepreneurship. Altrliated east- west, 1991.