Butlin, R. A. (1993). Historical geography: Through the gates of space and time. E. Arnold.
芝加哥风格引文Butlin, R. A. Historical Geography: Through the Gates of Space and Time. London: E. Arnold, 1993.
MLA引文Butlin, R. A. Historical Geography: Through the Gates of Space and Time. E. Arnold, 1993.
警告：这些引文格式不一定是100％准确.