APA-referens (7:e uppl.)

Chang, K. (2006). Introduction to geographic information systems (3rd ed.). McGraw-Hill Higher Education.

Chicago-referens (17:e uppl.)

Chang, Kang-Tsung. Introduction to Geographic Information Systems. 3rd ed. Boston: McGraw-Hill Higher Education, 2006.

MLA-referens (8:e uppl.)

Chang, Kang-Tsung. Introduction to Geographic Information Systems. 3rd ed. McGraw-Hill Higher Education, 2006.