Grewal, J S (2004). Historical Geography of the Punjab(PDF). Punjab Research Group, Volume 11, No 1. Journal of Punjab Studies. pp. 4, 7, 11. Arquivado dende o orixinal(PDF) o 03 de decembro de 2012.
Grewal, J S (2004). Historical Geography of the Punjab(PDF). Punjab Research Group, Volume 11, No 1. Journal of Punjab Studies. pp. 4, 7, 11. Arquivado dende o orixinal(PDF) o 03 de decembro de 2012.