Cita APA (7th ed.)

Drucker, P. F. (2015). Innovation and entrepreneurship: Practice and principles (2nd ed.). Routledge.

Cita Chicago (17th ed.)

Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. 2nd ed. New York: Routledge, 2015.

Cita MLA (9th ed.)

Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. 2nd ed. Routledge, 2015.