Martin, D. (1996). Geographic information systems: Socioeconomic applications (2nd ed.). Routledge.
Chicago Style (17th ed.) ZitazioaMartin, David. Geographic Information Systems: Socioeconomic Applications. 2nd ed. New York: Routledge, 1996.
MLA (9th ed.) ZitazioaMartin, David. Geographic Information Systems: Socioeconomic Applications. 2nd ed. Routledge, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.