Decker, D. (2001). GIS data sources. New York : |b J. , |c c2001: Wiley.
Trích dẫn kiểu ChicagoDecker, Drew. GIS Data Sources. New York : |b J. , |c c2001: Wiley, 2001.
MLA引文Decker, Drew. GIS Data Sources. New York : |b J. , |c c2001: Wiley, 2001.
警告:這些引文格式不一定是100%准確.