Lewis, J. L. (1972). Teaching school physics. Penguin Books.
Cita Chicago (17th ed.)Lewis, John L. Teaching School Physics. Harmondsworth, Middlesex: Penguin Books, 1972.
Cita MLA (9th ed.)Lewis, John L. Teaching School Physics. Penguin Books, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.