APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.