Covey, S. R. (2006). The 8th habit: From effectiveness to greatness (Miniature ed.). Running Press.
Lua i Stíl Chicago (17ú heag.)Covey, Stephen R. The 8th Habit: From Effectiveness to Greatness. Miniature ed. Philadelphia, PA: Running Press, 2006.
Lua MLA (8ú heag.)Covey, Stephen R. The 8th Habit: From Effectiveness to Greatness. Miniature ed. Running Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.