APA (7e ed.) Bronvermelding

Ash, K. M. (1994). Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc (3rd.). HarperCollins.

Chicago (17e ed.) Bronvermelding

Ash, Kay Mary. Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc. 3rd. New York: HarperCollins, 1994.

MLA (9e ed.) Bronvermelding

Ash, Kay Mary. Miracles Happen: The Life and Timeless Principles of the Founder of Mary Kay Inc. 3rd. HarperCollins, 1994.