Lewis, G. (1995). The power of a promise kept: Life stories. Focus on the Family Pub..
Lua i Stíl Chicago (17ú heag.)Lewis, Gregg. The Power of a Promise Kept: Life Stories. Colorado Springs, Colo.: Focus on the Family Pub., 1995.
Lua MLA (9ú heag.)Lewis, Gregg. The Power of a Promise Kept: Life Stories. Focus on the Family Pub., 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.