Cita APA (7th ed.)

Harnwell, G. P., & Legge, G. J. F. (1967). Physics: Matter, energy and the Universe. Reinhold.

Cita Chicago (17th ed.)

Harnwell, Gaylord P., i George J. F. Legge. Physics: Matter, Energy and the Universe. New York: Reinhold, 1967.

Cita MLA (9th ed.)

Harnwell, Gaylord P., i George J. F. Legge. Physics: Matter, Energy and the Universe. Reinhold, 1967.

Atenció: Aquestes cites poden no estar 100% correctes.