Nag, P. (1984). Census mapping surveying. Concept Publishing Company.
Chicago-čujuhus (17. p.)Nag, Prithivish. Census Mapping Surveying. New Delhi: Concept Publishing Company, 1984.
MLA-čujuhus (9. p.)Nag, Prithivish. Census Mapping Surveying. Concept Publishing Company, 1984.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.