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.
Citace podle Chicago (17th ed.)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.
Citace podle MLA (9th ed.)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.
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