Steinberg, S. L. (2015). GIS research methods: Incorporating spatial perspectives. Esri press.
Chicago-čujuhus (17. p.)Steinberg, Sheila Lakshmi. GIS Research Methods: Incorporating Spatial Perspectives. New York: Esri press, 2015.
MLA-čujuhus (9. p.)Steinberg, Sheila Lakshmi. GIS Research Methods: Incorporating Spatial Perspectives. Esri press, 2015.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.