Cita APA (7a ed.)

Drucker, P. F. (1986). Innovation and entrepreneurship: Practice and principles. Pan.

Cita Chicago Style (17a ed.)

Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. London: Pan, 1986.

Cita MLA (9a ed.)

Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. Pan, 1986.