Cooper, M., & Maynard, A. K. (1971). The price of air travel. Institute of Economic Affairs.
芝加哥风格引文Cooper, M.H, 与 Alan Keith Maynard. The Price of Air Travel. [London]: Institute of Economic Affairs, 1971.
MLA引文Cooper, M.H, 与 Alan Keith 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.