Gaya APA

Drucker, P, F. et al (2011). HBR's 10 Must Reads on Leadership (with featured article "What Makes an Effective Executive," by Peter F. Drucker) . Boston: Harvard Business Review Press.

Gaya MLA

Drucker, Peter, F.. et al. "HBR's 10 Must Reads on Leadership (with featured article "What Makes an Effective Executive," by Peter F. Drucker)". Boston: Harvard Business Review Press, 2011. Text.