Dyfyniad APA

Chang, K., & Kang-tsung chang. (2008). Introduction geographic information systems (2008.). Tata Mcgrowhill.

Dyfyniad Arddull Chicago

Chang, Kang-tsung, and Kang-tsung chang. Introduction Geographic Information Systems. 2008. Noida: Tata Mcgrowhill, 2008.

Dyfyniad MLA

Chang, Kang-tsung, and Kang-tsung chang. Introduction Geographic Information Systems. 2008. Tata Mcgrowhill, 2008.

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