Dyfyniad APA

Johnson, G. O., & Blake, K. A. (1960). Learning performance of retarded and normal children. Syracuse University.

Dyfyniad Arddull Chicago

Johnson, George Orville, and Kathryn A. Blake. Learning Performance of Retarded and Normal Children. [Syracuse, N. Y.]: Syracuse University, 1960.

Dyfyniad MLA

Johnson, George Orville, and Kathryn A. Blake. Learning Performance of Retarded and Normal Children. Syracuse University, 1960.

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