Edwards, G. C., & Sharkansky, I. (1978). The policy predicament: Making and imple-implementing public policy. Freeman.
Chicago Style (17th ed.) ZitazioaEdwards, George C., eta Ira Sharkansky. The Policy Predicament: Making and Imple-implementing Public Policy. San Francisco: Freeman, 1978.
MLA (9th ed.) ZitazioaEdwards, George C., eta Ira Sharkansky. The Policy Predicament: Making and Imple-implementing Public Policy. Freeman, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.