Gaya APA

Weiner, D, L., Vining, A, R. (1989). Policy Analysis: Concept And Practice . Englewood Cliffs, NJ: Prentice Hall.

Gaya MLA

Weiner, David, L.., Vining, Aidan, R.. "Policy Analysis: Concept And Practice". Englewood Cliffs, NJ: Prentice Hall, 1989. Text.