Dyfyniad APA

Cohen, L., & Manion, L. (1985). Research methods in education (2nd ed.). Croom Helm.

Dyfyniad Arddull Chicago

Cohen, Louis, and Lawrence Manion. Research Methods in Education. 2nd ed. London: Croom Helm, 1985.

Dyfyniad MLA

Cohen, Louis, and Lawrence Manion. Research Methods in Education. 2nd ed. Croom Helm, 1985.

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