Gaya APA

Barber, B, E. (2004). No excuse leadership : lessons from the U.S. Army's elite rangers / Brace E. Barber . Canada: John Wiley \r Sons.

Gaya MLA

Barber, Brace, E.. "No excuse leadership : lessons from the U.S. Army's elite rangers / Brace E. Barber". Canada: John Wiley \r Sons, 2004. Buku.