Dyfyniad APA

Sowell, E. J., & Casey, R. J. (1982). Research methods in education. Wadsworth Pub. Co..

Dyfyniad Arddull Chicago

Sowell, Evelyn J., and Rita J. Casey. Research Methods in Education. Belmont, CA: Wadsworth Pub. Co., 1982.

Dyfyniad MLA

Sowell, Evelyn J., and Rita J. Casey. Research Methods in Education. Wadsworth Pub. Co., 1982.

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