Dyfyniad APA

Portney, K. E. (1986). Approaching public policy analysis: An introduction to policy and program research. Prentice-Hall.

Dyfyniad Arddull Chicago

Portney, Kent E. Approaching Public Policy Analysis: An Introduction to Policy and Program Research. Englewood Cliffs, N.J: Prentice-Hall, 1986.

Dyfyniad MLA

Portney, Kent E. Approaching Public Policy Analysis: An Introduction to Policy and Program Research. Prentice-Hall, 1986.

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