Dyfyniad APA

Nachmias, D. (1980). The Practice of policy evaluation. St. Martin's Press.

Dyfyniad Arddull Chicago

Nachmias, David. The Practice of Policy Evaluation. New York: St. Martin's Press, 1980.

Dyfyniad MLA

Nachmias, David. The Practice of Policy Evaluation. St. Martin's Press, 1980.

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