Hird, J. A. (1995). Controversies in American public policy. New York: St. Martin's Press.
Trích dẫn kiểu ChicagoHird, John A. Controversies in American Public Policy. New York: St. Martin's Press, 1995.
MLA citiranjeHird, John A. Controversies in American Public Policy. New York: St. Martin's Press, 1995.
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