Dyfyniad APA

Weiss, C. H. (1972). Evaluation research: Methods for assessing program effectiveness. Prentice-Hall.

Dyfyniad Arddull Chicago

Weiss, Carol H. Evaluation Research: Methods for Assessing Program Effectiveness. Englewood Cliffs, NJ: Prentice-Hall, 1972.

Dyfyniad MLA

Weiss, Carol H. Evaluation Research: Methods for Assessing Program Effectiveness. Prentice-Hall, 1972.

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