Dyfyniad APA

Patton, C. V., & Sawicki, D. S. (1993). Basic methods of policy analysis and planning (2nd ed.). Prentice-Hall.

Dyfyniad Arddull Chicago

Patton, Carl V., and David S. Sawicki. Basic Methods of Policy Analysis and Planning. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1993.

Dyfyniad MLA

Patton, Carl V., and David S. Sawicki. Basic Methods of Policy Analysis and Planning. 2nd ed. Prentice-Hall, 1993.

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