Dyfyniad APA

Chris Athey. Teacher Partnership (Second Edition). SAGE.

Dyfyniad Arddull Chicago

Chris Athey. Teacher Partnership (Second Edition). SAGE.

Dyfyniad MLA

Chris Athey. Teacher Partnership (Second Edition). SAGE.

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