Cita APA

 Parrett, W. G. (2007).  The sentinel CEO: Perspectives on security, risk, and leadership in a post-911 world.  John Wiley & Sons.

Chicago Style Citation

 Parrett, William G.  The Sentinel CEO: Perspectives On Security, Risk, and Leadership in a Post-911 World.  John Wiley & Sons, 2007.

Cita MLA

 Parrett, William G.  The Sentinel CEO: Perspectives On Security, Risk, and Leadership in a Post-911 World.  John Wiley & Sons, 2007.