Henning, D. (1974). Environmental policy and administration: Daniel H. Henning. American Elsevier Pub.
Chicago Style (17. basım) AtıfHenning, Daniel. Environmental Policy and Administration: Daniel H. Henning. New York: American Elsevier Pub, 1974.
MLA (9th ed.) AtıfHenning, Daniel. Environmental Policy and Administration: Daniel H. Henning. American Elsevier Pub, 1974.
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