Gopal, Madan (1990). K.S. Gautam (ed.). India through the ages. Publication Division, Ministry of Information and Broadcasting, Government of India. p. 179.
Goff, James; Dudley, Walter (March 2021). "Boxing Day: The World's Worst Disaster of the 21st Century". Tsunami: 189–202. doi:10.1093/oso/9780197546123.003.0016.