APA Citation

 Rostad, K. A. (2013).  The man in the arena: Vanguard founder john c. bogle and his lifelong battle to serve investors first.  John Wiley and Sons.

Chicago Style Citation

 Rostad, Knut A.  The Man in the Arena: Vanguard Founder John C. Bogle and His Lifelong Battle to Serve Investors First.  John Wiley and Sons, 2013.

MLA Citation

 Rostad, Knut A.  The Man in the Arena: Vanguard Founder John C. Bogle and His Lifelong Battle to Serve Investors First.  John Wiley and Sons, 2013.

Warning: These citations may not always be 100% accurate.