Dyfyniad APA

Certo, S. Supervision: Concepts and Skill-Building.

Dyfyniad Arddull Chicago

Certo, Samuel. Supervision: Concepts and Skill-Building.

Dyfyniad MLA

Certo, Samuel. Supervision: Concepts and Skill-Building.

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