APA (7th ed.) Citation

Obermeyer, N. J., & Pinto, J. K. (1994). Managing geographic information systems. Guilford Press.

Chicago Style (17th ed.) Citation

Obermeyer, Nancy J., and Jeffrey K. Pinto. Managing Geographic Information Systems. New York u.a: Guilford Press, 1994.

MLA (9th ed.) Citation

Obermeyer, Nancy J., and Jeffrey K. Pinto. Managing Geographic Information Systems. Guilford Press, 1994.