Maguire, D. J., Goodchild, M. F., & Rhind, D. (1991). Geographical information systems, volume 1: Principles. Longman.
Chicago Style (17th ed.) CitationMaguire, D. J., Michael F. Goodchild, and David Rhind. Geographical Information Systems, Volume 1: Principles. Harlow, Eng.: Longman, 1991.
MLA (9th ed.) CitationMaguire, D. J., et al. Geographical Information Systems, Volume 1: Principles. Longman, 1991.
Warning: These citations may not always be 100% accurate.