APA (7th ed.) Citation

Stillwell, J. C. H., Geertman, S., & Openshaw, S. (1999). Geographical information and planning. Springer.

Chicago Style (17th ed.) Citation

Stillwell, John C. H., Stan Geertman, and Stan Openshaw. Geographical Information and Planning. Berlin ; New York: Springer, 1999.

MLA (9th ed.) Citation

Stillwell, John C. H., et al. Geographical Information and Planning. Springer, 1999.