Dyfyniad APA

Good, T. L., & Brophy, J. E. (1987). Looking in classrooms (Forth edition.). Harper & Row.

Dyfyniad Arddull Chicago

Good, Thomas L., and Jere E. Brophy. Looking in Classrooms. Forth edition. New York: Harper & Row, 1987.

Dyfyniad MLA

Good, Thomas L., and Jere E. Brophy. Looking in Classrooms. Forth edition. Harper & Row, 1987.

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