Chang, K. (2019). Introduction to geographic information systems (Ninth edition, International student edition.). McGraw-Hill Education.
Chicago Style aipamenaChang, Kang-Tsung. Introduction to Geographic Information Systems. Ninth edition, International student edition. New York: McGraw-Hill Education, 2019.
MLA aipamenaChang, Kang-Tsung. Introduction to Geographic Information Systems. Ninth edition, International student edition. McGraw-Hill Education, 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.