Ash, K. M. (1994). Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc (3rd.). HarperCollins.
Lua i Stíl Chicago (17ú heag.)Ash, Kay Mary. Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc. 3rd. New York: HarperCollins, 1994.
Lua MLA (9ú heag.)Ash, Kay Mary. Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc. 3rd. HarperCollins, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.