Chang,Kang-tsung. (2008). Inorganic geographic information systems (4th ed.). Tata McGraw-Hill.
Dyfyniad Arddull ChicagoChang,Kang-tsung. Inorganic Geographic Information Systems. 4th ed. New Delhi: Tata McGraw-Hill, 2008.
Dyfyniad MLAChang,Kang-tsung. Inorganic Geographic Information Systems. 4th ed. Tata McGraw-Hill, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.