APA citiranje

Obermeyer, N. J. (1994). Managing geographic information systems. New York: Guilford Press.

Trích dẫn kiểu Chicago

Obermeyer, Nancy J. Managing Geographic Information Systems. New York: Guilford Press, 1994.

MLA citiranje

Obermeyer, Nancy J. Managing Geographic Information Systems. New York: Guilford Press, 1994.