Siegel, S. A. (1960). The law of open space: Legal aspects of acquiring or otherwise preserving open space in the tri-state New York metropolitan region. Regional Plan Association.
芝加哥风格引文Siegel, Shirley Adelson. The Law of Open Space: Legal Aspects of Acquiring or Otherwise Preserving Open Space in the Tri-state New York Metropolitan Region. New York: Regional Plan Association, 1960.
MLA引文Siegel, Shirley Adelson. The Law of Open Space: Legal Aspects of Acquiring or Otherwise Preserving Open Space in the Tri-state New York Metropolitan Region. Regional Plan Association, 1960.
警告：这些引文格式不一定是100％准确.