Cita APA (7th ed.)

Drucker, P. F. (2017). The Theory of the Business. Harvard Business Review Press.

Cita Chicago (17th ed.)

Drucker, Peter F. The Theory of the Business. Boston, Massachesutts: Harvard Business Review Press, 2017.

Cita MLA (9th ed.)

Drucker, Peter F. The Theory of the Business. Harvard Business Review Press, 2017.