Tham khảo Nghi_thức

  1. ↑ “Definition of RITUAL”. www.merriam-webster.com (bằng tiếng Anh). 
  2. ↑ Bell, Catherine (1997). Ritual: Perspectives and Dimensions. New York: Oxford University Press. tr. 138–69.  Đã bỏ qua tham số không rõ |url-access= (trợ giúp)
  3. ↑ Brown, Donald (1991). Human Universals. United States: McGraw Hill. tr. 139. 
  4. ↑ Kyriakidis, E., ed. (2007). The archaeology of ritual. Cotsen Institute of Archaeology UCLA publications.