APA (7. basım) Alıntı

Drucker, P. (1985). Innovation and entrepreneurship. Heinemann.

Chicago Style (17. basım) Atıf

Drucker, Peter. Innovation and Entrepreneurship. London: Heinemann, 1985.

MLA (9th ed.) Atıf

Drucker, Peter. Innovation and Entrepreneurship. Heinemann, 1985.