APA ציטוט

Martin, D. (1991). Geographic information systems and their socioeconomic applications. Routledge.

Chicago Style (17th ed.) Citation

Martin, David. Geographic Information Systems and Their Socioeconomic Applications. London ; New York: Routledge, 1991.

ציטוט MLA

Martin, David. Geographic Information Systems and Their Socioeconomic Applications. Routledge, 1991.