Dyfyniad APA

Lester, J. P., & Stewart, J. (2000). Public policy: An evolutionary approach (2nd ed.). Wadsworth/Thomson Learning.

Dyfyniad Arddull Chicago

Lester, James P., and Joseph Stewart. Public Policy: An Evolutionary Approach. 2nd ed. Australia: Wadsworth/Thomson Learning, 2000.

Dyfyniad MLA

Lester, James P., and Joseph Stewart. Public Policy: An Evolutionary Approach. 2nd ed. Wadsworth/Thomson Learning, 2000.

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