Dyfyniad APA

Dye, T. R. (2008). Understanding public policy (12th ed.). Pearson/Prentice Hall.

Dyfyniad Arddull Chicago

Dye, Thomas R. Understanding Public Policy. 12th ed. Upper Saddle River, New jersey: Pearson/Prentice Hall, 2008.

Dyfyniad MLA

Dye, Thomas R. Understanding Public Policy. 12th ed. Pearson/Prentice Hall, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.