Cita APA (7a ed.)

GEOGRAPHICAL & MAGUIRE, D. J. [. (1991). Geographical information systems: Principles and appli-cations. Longman.

Cita Chicago Style (17a ed.)

GEOGRAPHICAL y David J [ed] MAGUIRE. Geographical Information Systems: Principles and Appli-cations. New York: Longman, 1991.

Cita MLA (9a ed.)

GEOGRAPHICAL y David J [ed] MAGUIRE. Geographical Information Systems: Principles and Appli-cations. Longman, 1991.