Covey, S. R. (2000). Living the 7 habits: The courage to change (1st Fireside edition.). Simon & Schuster.
Lua i Stíl Chicago (17ú heag.)Covey, Stephen R. Living the 7 Habits: The Courage to Change. 1st Fireside edition. New York: Simon & Schuster, 2000.
Lua MLA (9ú heag.)Covey, Stephen R. Living the 7 Habits: The Courage to Change. 1st Fireside edition. Simon & Schuster, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.