APA (7e ed.) Bronvermelding

Gale Group, Shekhar, S., & Xiong, H. (2008). Encyclopedia of GIS. Springer.

Chicago (17e ed.) Bronvermelding

Gale Group, Shashi Shekhar, en Hui Xiong. Encyclopedia of GIS. New York: Springer, 2008.

MLA (9e ed.) Bronvermelding

Gale Group, et al. Encyclopedia of GIS. Springer, 2008.