Cita APA (7a ed.)

Drucker, P. F. (1986). Innovation and entrepreneurship. HarperBusiness.

Cita Chicago Style (17a ed.)

Drucker, Peter F. Innovation and Entrepreneurship. New York: HarperBusiness, 1986.

Cita MLA (9a ed.)

Drucker, Peter F. Innovation and Entrepreneurship. HarperBusiness, 1986.