1. Alexander, E. (2012). Proof of heaven. New York: Simon & Schuster.
2. Alexander, E., & Tompkins, P. (2014). The map of heaven. New York: Simon & Schuster.
3. Anderson, M. (2004). Sacred dying: Creating rituals for embracing the end of life. New York: Marlowe.
4. Ariès, P. (1974). Western attitudes toward death. Baltimore: Johns Hopkins University Press.
5. Ariès, P. (1981). The hour of our death. New York: Knopf.