Cooper, M. H., & Maynard, A. (1971). The price of air travel. Institute of Economic Affairs.
芝加哥风格引文Cooper, Michael H., 与 Alan Maynard. The Price of Air Travel. London: Institute of Economic Affairs, 1971.
MLA引文Cooper, Michael H., 与 Alan Maynard. The Price of Air Travel. Institute of Economic Affairs, 1971.
警告：这些引文格式不一定是100％准确.