APA (7e ed.) Bronvermelding

Drucker, P. F. (1985). Innovation and entrepreneurship: Practice and principles. Harper & Row.

Chicago (17e ed.) Bronvermelding

Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. New York: Harper & Row, 1985.

MLA (9e ed.) Bronvermelding

Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. Harper & Row, 1985.