Mary C. Neal, M.D. (2012). “To Heaven and Back: A Doctor's Extraordinary Account of Her Death, Heaven, Angels, and Life Again: A True Story”, p.93, WaterBrook
Mary C. Neal, M.D. (2012). “To Heaven and Back: A Doctor's Extraordinary Account of Her Death, Heaven, Angels, and Life Again: A True Story”, p.94, WaterBrook