Ash, K. M. (1994). Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc (3rd.). HarperCollins.
Chicago-viite (17. p.)Ash, Kay Mary. Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc. 3rd. New York: HarperCollins, 1994.
MLA-viite (9. p.)Ash, Kay Mary. Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc. 3rd. HarperCollins, 1994.
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