Jones, C. O. (1970). An introduction to the study of public policy. Wadsworth Pub. Co..
Lua i Stíl Chicago (17ú heag.)Jones, Charles O. An Introduction to the Study of Public Policy. Belmont, Calif.: Wadsworth Pub. Co., 1970.
Lua MLA (9ú heag.)Jones, Charles O. An Introduction to the Study of Public Policy. Wadsworth Pub. Co., 1970.
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