APA (7th ed.) Citation

Environmental Systems Research Institute (Redlands, Calif.), Birbeck College, Rhind, D., & Connolly, T. (1990). Understanding GIS: The ARC/INFO method (Rev. December 1990.). Environmental Systems Research Institute.

Chicago Style (17th ed.) Citation

Environmental Systems Research Institute (Redlands, Calif.), Birbeck College, David Rhind, and Theresa Connolly. Understanding GIS: The ARC/INFO Method. Rev. December 1990. Redlands, CA, USA: Environmental Systems Research Institute, 1990.

MLA (9th ed.) Citation

Environmental Systems Research Institute (Redlands, Calif.), et al. Understanding GIS: The ARC/INFO Method. Rev. December 1990. Environmental Systems Research Institute, 1990.