Cita APA (7th ed.)
Chang, K. (2004). Introduction to geographic information systems (2nd ed.). McGraw-Hill Higher Education.
Cita Chicago (17th ed.)
Chang, Kang-Tsung. Introduction to Geographic Information Systems. 2nd ed. Boston: McGraw-Hill Higher Education, 2004.
Cita MLA (9th ed.)
Chang, Kang-Tsung. Introduction to Geographic Information Systems. 2nd ed. McGraw-Hill Higher Education, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.