Caldwell, L. K., Bartlett, R. V., & Gladden, J. N. (1995). Environment as a focus for public policy. Texas A&M University Press.
Chicago Style (17. basım) AtıfCaldwell, Lynton Keith, Robert V. Bartlett, ve James N. Gladden. Environment as a Focus for Public Policy. College Station: Texas A&M University Press, 1995.
MLA (9th ed.) AtıfCaldwell, Lynton Keith, et al. Environment as a Focus for Public Policy. Texas A&M University Press, 1995.
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