Dyfyniad APA

University, W. S. Research studies : Monographic supplement. Pullman, Wash.

Dyfyniad Arddull Chicago

University, Washington State. Research Studies : Monographic Supplement. Pullman, Wash.

Dyfyniad MLA

University, Washington State. Research Studies : Monographic Supplement. Pullman, Wash.

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