Dyfyniad APA

Lewis, J. L. (1972). Teaching school physics. Penguin Books.

Dyfyniad Arddull Chicago

Lewis, John L. Teaching School Physics. Harmondsworth, Middlesex: Penguin Books, 1972.

Dyfyniad MLA

Lewis, John L. Teaching School Physics. Penguin Books, 1972.

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