APA
Chang K., . (2019). Introduction to geographic information systems [9th ed.]. New York: McGraw Hill.
Chicago
Chang Kang-tsung, . 2019. Introduction to geographic information systems [9th ed.]. New York: McGraw Hill.
Harvard
Chang K., . (2019). Introduction to geographic information systems [9th ed.]. New York: McGraw Hill.
MLA
Chang Kang-tsung, . Introduction to geographic information systems [9th ed.]. New York: McGraw Hill. 2019.