Gaya APA

Kouzes, J, M., Posner, B, Z. (2003). Credibility : how leaders gain and lose it, why people demand It . San Francisco: Jossey Bass.

Gaya MLA

Kouzes, James, M.., Posner, Barry, Z.. "Credibility : how leaders gain and lose it, why people demand It". San Francisco: Jossey Bass, 2003. Buku/Printed Material.