Dyfyniad APA

Wittrock, M. (1970). Evalution of Instruction. Holt, Rinehart and Winston, Inc.

Dyfyniad Arddull Chicago

Wittrock, M.C. Evalution of Instruction. New York: Holt, Rinehart and Winston, Inc, 1970.

Dyfyniad MLA

Wittrock, M.C. Evalution of Instruction. Holt, Rinehart and Winston, Inc, 1970.

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