APA (7th ed.) Citation

Gale Group & Kemp, K. K. (2008). Encyclopedia of geographic information science. Sage Publications.

Chicago Style (17th ed.) Citation

Gale Group and Karen K. Kemp. Encyclopedia of Geographic Information Science. Thousand Oaks, Calif: Sage Publications, 2008.

MLA (9th ed.) Citation

Gale Group and Karen K. Kemp. Encyclopedia of Geographic Information Science. Sage Publications, 2008.