Dyfyniad APA

Chang, K. (2006). Introduction to geographic information systems (3rd ed.). Tata McGraw-Hill.

Dyfyniad Arddull Chicago

Chang, Kang-tsung. Introduction to Geographic Information Systems. 3rd ed. New Delhi: Tata McGraw-Hill, 2006.

Dyfyniad MLA

Chang, Kang-tsung. Introduction to Geographic Information Systems. 3rd ed. Tata McGraw-Hill, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.