References on Near Death Experiences

Dr. Raymond Moody is the pioneer in this field, at University of Virginia.  He's done lots of research and written many books on the subject of NDE.

A few books 

Embraced by the Light by Betty Jean Eadie
Saved by the Light by Dannion Brinkley
Closer to the Light by Dr. Melvin Morse
90 Minutes in Heaven byDon Piper
The Map of Heaven & Proof of Heaven by Dr. Eben Alexander  (2 books)
Dying to Be Me  by Anita Moorjani
Angels in My Hair by Lorna Byrne
Heaven Is for Real by Todd Burpo  (a little boy's NDE)