Dyfyniad APA

Weiss, C. H. (1998). Evaluation: Methods for studying programs and politics (2nd ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Weiss, Carol H. Evaluation: Methods for Studying Programs and Politics. 2nd ed. Upper Saddle River, N.J: Prentice Hall, 1998.

Dyfyniad MLA

Weiss, Carol H. Evaluation: Methods for Studying Programs and Politics. 2nd ed. Prentice Hall, 1998.

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