West Bengal. Circular, West Bengal Board of Secondary Education, 28 April 1989 (number Syl/89/1). Quoted in Arun Shourie - Eminent Historians: Their Technology, Their Line, Their Fraud, HarperCollins, 1998. Quoted in Lal, K. S. (1992). The legacy of Muslim rule in India. New Delhi: Aditya Prakashan. Chapter 8. Quoted in Rosser, Yvette In Saha, S. C. (2004). Religious fundamentalism in the contemporary world: Critical social and political issues. Quoted in Rao, R. N. (2001). Coalition conundrum: https://en.wikiquote.org/wiki/Historical_negationism