Peale, N. (1998). The power of positive living. Vermilion.
Lua i Stíl Chicago (17ú heag.)Peale, Norman. The Power of Positive Living. London: Vermilion, 1998.
Lua MLA (9ú heag.)Peale, Norman. The Power of Positive Living. Vermilion, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.