↑The Times Atlas of the World, Concise Edition. Londres: Times Books. 1995. p. 36. ISBN0 7230 0718 7.
↑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.
↑Pritam Singh and Shinder S. Thandi, ed. (1996). Globalisation and the region: explorations in Punjabi identity. Coventry Association for Punjab Studies, Coventry University. p. 361.