Dyfyniad APA

Cohen, L., Manion, L., & Morrison, K. (2007). Research methods in education (6th ed.). Routledge.

Dyfyniad Arddull Chicago

Cohen, Louis, Lawrence Manion, and Keith Morrison. Research Methods in Education. 6th ed. London: Routledge, 2007.

Dyfyniad MLA

Cohen, Louis, et al. Research Methods in Education. 6th ed. Routledge, 2007.

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