Chang, K. (2014). Introduction to Geographic Information Systems-with CD (4 th.). McGraw Hill Eduction Pvt. Ltd.
Chicago-čujuhus (17. p.)Chang, Kang-tsung. Introduction to Geographic Information Systems-with CD. 4 th. New Delhi: McGraw Hill Eduction Pvt. Ltd, 2014.
MLA-čujuhus (9. p.)Chang, Kang-tsung. Introduction to Geographic Information Systems-with CD. 4 th. McGraw Hill Eduction Pvt. Ltd, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.