Ratcliff, R. U. (1972). Urban land economics. Greenwood Press.
芝加哥风格引文Ratcliff, Richard Updegraff. Urban Land Economics. Westport, Conn.: Greenwood Press, 1972.
MLA引文Ratcliff, Richard Updegraff. Urban Land Economics. Greenwood Press, 1972.
警告：这些引文格式不一定是100％准确.