Pegrum, D. F. (1963). Transportation: Economics and public policy. Irwin.
芝加哥风格引文Pegrum, Dudley Frank. Transportation: Economics and Public Policy. Homewood, Ill: Irwin, 1963.
MLA引文Pegrum, Dudley Frank. Transportation: Economics and Public Policy. Irwin, 1963.
警告：这些引文格式不一定是100％准确.