Demers , . M. N. (2000). Fundamentals of geographic information systems (2nd ed.). J. Wiley.
Chicago-čujuhus (17. p.)Demers , Michael N. Fundamentals of Geographic Information Systems. 2nd ed. New York: J. Wiley, 2000.
MLA-čujuhus (9. p.)Demers , Michael N. Fundamentals of Geographic Information Systems. 2nd ed. J. Wiley, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.