Azizullah, Azizullah; Khattak, Muhammad Nasir Khan; Richter, Peter; Häder, Donat-Peter (2011). "Water pollution in Pakistan and its impact on public health — A review". Environment International. 37 (2): 479–497. doi:10.1016/j.envint.2010.10.007. PMID21087795.
Haque, Syeda Jesmin; Onodera, Shin-ichi; Shimizu, Yuta (2013-04-01). "An overview of the effects of urbanization on the quantity and quality of groundwater in South Asian megacities". Limnology. 14 (2): 135–145. doi:10.1007/s10201-012-0392-6. ISSN1439-8621.
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pubmed.ncbi.nlm.nih.gov
Azizullah, Azizullah; Khattak, Muhammad Nasir Khan; Richter, Peter; Häder, Donat-Peter (2011). "Water pollution in Pakistan and its impact on public health — A review". Environment International. 37 (2): 479–497. doi:10.1016/j.envint.2010.10.007. PMID21087795.
Haque, Syeda Jesmin; Onodera, Shin-ichi; Shimizu, Yuta (2013-04-01). "An overview of the effects of urbanization on the quantity and quality of groundwater in South Asian megacities". Limnology. 14 (2): 135–145. doi:10.1007/s10201-012-0392-6. ISSN1439-8621.