Bowen, J. (2010). The economic geography of air transportation: Space, time, and the freedom of the sky. Routledge.
芝加哥风格引文Bowen, John. The Economic Geography of Air Transportation: Space, Time, and the Freedom of the Sky. London: Routledge, 2010.
MLA引文Bowen, John. The Economic Geography of Air Transportation: Space, Time, and the Freedom of the Sky. Routledge, 2010.
警告：这些引文格式不一定是100％准确.