APA (7e ed.) Bronvermelding

Chang, K. (2019). Introduction to geographic information systems (Ninth edition.). McGraw-Hill Education.

Chicago (17e ed.) Bronvermelding

Chang, Kang-Tsung. Introduction to Geographic Information Systems. Ninth edition. New York: McGraw-Hill Education, 2019.

MLA (9e ed.) Bronvermelding

Chang, Kang-Tsung. Introduction to Geographic Information Systems. Ninth edition. McGraw-Hill Education, 2019.