Dyfyniad APA

Educational Leadership. Association for Supervision & Curriculum Development.

Dyfyniad Arddull Chicago

Educational Leadership. Association for Supervision & Curriculum Development.

Dyfyniad MLA

Educational Leadership. Association for Supervision & Curriculum Development.

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