Cita APA (7th ed.)

Chang, K. (2012). Introduction to geographic information systems (6th, international ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Chang, Kang-Tsung. Introduction to Geographic Information Systems. 6th, international ed. Boston, Mass: McGraw-Hill, 2012.

Cita MLA (9th ed.)

Chang, Kang-Tsung. Introduction to Geographic Information Systems. 6th, international ed. McGraw-Hill, 2012.