Dyfyniad APA

Shafritz, J. M., & Borick, C. P. (2008). Introducing public policy. Pearson Longman.

Dyfyniad Arddull Chicago

Shafritz, Jay M., and Christopher P. Borick. Introducing Public Policy. New York: Pearson Longman, 2008.

Dyfyniad MLA

Shafritz, Jay M., and Christopher P. Borick. Introducing Public Policy. Pearson Longman, 2008.

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