Cita APA (7a ed.)

Drucker, P. F. (1985). Innovation and entrepreneurship: Practice and principles. William Heinemann.

Cita Chicago Style (17a ed.)

Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. London: William Heinemann, 1985.

Cita MLA (9a ed.)

Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. William Heinemann, 1985.