Dyfyniad APA

Struening, E. L., & Guttentag, M. (1975). Handbook of evaluation research. Sage Publications.

Dyfyniad Arddull Chicago

Struening, Elmer L., and Marcia Guttentag. Handbook of Evaluation Research. Beverly Hills, Calif.: Sage Publications, 1975.

Dyfyniad MLA

Struening, Elmer L., and Marcia Guttentag. Handbook of Evaluation Research. Sage Publications, 1975.

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