Honigmann, E.; Bosworth, C.E.. "Nīs̲h̲āpūr." Encyclopaedia of Islam, Second Edition. Edited by: P. Bearman, Th. Bianquis, C.E. Bosworth, E. van Donzel, W.P. Heinrichs. Brill Online, 2013. Reference. 31 December 2013
britannica.com
"Nishapur pottery". Encyclopedia Britannica. Retrieved 10 February 2018.
Nishapur can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3076915" in the "Unique Feature Id" form, and clicking on "Search Database".