Chang, K. (2002). Introduction to geographic information systems. New Delhi: McGraw-Hill Higher Education.
Chicago Style aipamenaChang, Kang-Tsung. Introduction to Geographic Information Systems. New Delhi: McGraw-Hill Higher Education, 2002.
MLA aipamenaChang, Kang-Tsung. Introduction to Geographic Information Systems. New Delhi: McGraw-Hill Higher Education, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.