Iyer, P. (2013). Secret of leadership: Stories to awaken, inspire and unleash the leader within. Portfolo Penguin.
Chicago-viite (17. p.)Iyer, Prakash. Secret of Leadership: Stories to Awaken, Inspire and Unleash the Leader Within. USA: Portfolo Penguin, 2013.
MLA-viite (9. p.)Iyer, Prakash. Secret of Leadership: Stories to Awaken, Inspire and Unleash the Leader Within. Portfolo Penguin, 2013.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.