Lua APA (7ú heag.)
Lutz, R. A. (2003). Guts: 8 laws of business from one of the most innovative business leaders of our time (2nd ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)
Lutz, Robert A. Guts: 8 Laws of Business from One of the Most Innovative Business Leaders of Our Time. 2nd ed. Hoboken, NJ: Wiley, 2003.
Lua MLA (9ú heag.)
Lutz, Robert A. Guts: 8 Laws of Business from One of the Most Innovative Business Leaders of Our Time. 2nd ed. Wiley, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.