Harvard Business Review. (2008). Harvard business review on the persuasive leader.
Chicago Style aipamenaHarvard Business Review. Harvard Business Review on the Persuasive Leader. Harward Business School Press, 2008.
MLA aipamenaHarvard Business Review. Harvard Business Review on the Persuasive Leader. 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.