Gaya APA

Lutz, R, A. (2003). Guts : 8 laws of business from one of the most innovative business leaders of our time / Robert A. Lutz . Canada: John Wiley \r Sons.

Gaya MLA

Lutz, Robert, A.. "Guts : 8 laws of business from one of the most innovative business leaders of our time / Robert A. Lutz". Canada: John Wiley \r Sons, 2003. Buku.