Cita APA (7a ed.)

Drucker, P. F. (1999). Innovation and entrepreneurship: : Practice and Principles. Butterworth Heinemann.

Cita Chicago Style (17a ed.)

Drucker, Peter F. Innovation and Entrepreneurship: : Practice and Principles. Oxford: Butterworth Heinemann, 1999.

Cita MLA (9a ed.)

Drucker, Peter F. Innovation and Entrepreneurship: : Practice and Principles. Butterworth Heinemann, 1999.