Dyfyniad APA

Kang-tsung Chang. (2004). Introduction to geographic information systems. Boston, MA: McGraw-Hill.

Dyfyniad Arddull Chicago

Kang-tsung Chang. Introduction to Geographic Information Systems. Boston, MA: McGraw-Hill, 2004.

Dyfyniad MLA

Kang-tsung Chang. Introduction to Geographic Information Systems. Boston, MA: McGraw-Hill, 2004.

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