Drucker, P. F., & Peter F. Drucker. Managing oneself. Boston, Mass: Harvard Business Press.
Chicago Style CitationDrucker, Peter F., i Peter F. Drucker. Managing Oneself. Boston, Mass: Harvard Business Press.
Cita MLADrucker, Peter F., i Peter F. Drucker. Managing Oneself. Boston, Mass: Harvard Business Press.
Atenció: Aquestes cites poden no estar 100% correctes.