1. Adams, K., Hyde, B., & Woolley, R. (2008). The spiritual dimension of childhood. London, UK: Jessica Kingsley Publishers.
2. Alexander, E. (2012). Proof of heaven: A neurosurgeon’s journey into the afterlife. New York, NY: Simon & Schuster Paperbacks.
3. Alexander, E. (2014). The map of heaven: How science, religion, and ordinary people are proving the afterlife. New York, NY: Simon & Schuster Paperbacks.
4. Amatuzio, J. (2004). Forever ours: Real stories of immortality and living from a forensic pathologist. Novato, CA: New World Library.
5. Amatuzio, J. (2006). Beyond knowing: Mysteries and messages of death and life from a forensic pathologist. Novato, CA: New World Library.