Martin, D. (1991). Geographic information systems and their socioeconomic applications. Routledge.
芝加哥风格引文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：这些引文格式不一定是100％准确.