Flippen, J. B. (2006). Conservative conservationist: Russell E. Train and the emergence of American environmentalism. Louisiana State University Press.
Citace podle Chicago (17th ed.)Flippen, J. Brooks. Conservative Conservationist: Russell E. Train and the Emergence of American Environmentalism. Baton Rouge: Louisiana State University Press, 2006.
Citace podle MLA (9th ed.)Flippen, J. Brooks. Conservative Conservationist: Russell E. Train and the Emergence of American Environmentalism. Louisiana State University Press, 2006.
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