Dyfyniad APA

(1981). Evaluation research and practice:comparative: And international perspectives. Sage.

Dyfyniad Arddull Chicago

Evaluation Research and Practice:comparative: And International Perspectives. Beverly Hills, Calif: Sage, 1981.

Dyfyniad MLA

Evaluation Research and Practice:comparative: And International Perspectives. Sage, 1981.

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