APA引文

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.

MLA引文

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

警告：這些引文格式不一定是100％准確.