Chang, K. (2006). Introduction to geographic information systems with data set cd-rom (Third edition.). McGraw-Hill Higher Education.
Chicago-čujuhus (17. p.)Chang, Kang-Tsung. Introduction to Geographic Information Systems with Data Set Cd-rom. Third edition. Boston: McGraw-Hill Higher Education, 2006.
MLA-čujuhus (9. p.)Chang, Kang-Tsung. Introduction to Geographic Information Systems with Data Set Cd-rom. Third edition. McGraw-Hill Higher Education, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.