APA

Chang K., . (2006). Introduction to geographic information systems. Nueva York: McGraw-Hill.

Chicago

Chang Kang-tsung, . 2006. Introduction to geographic information systems. Nueva York: McGraw-Hill.

Harvard

Chang K., . (2006). Introduction to geographic information systems. Nueva York: McGraw-Hill.

MLA

Chang Kang-tsung, . Introduction to geographic information systems. Nueva York: McGraw-Hill. 2006.