Cita APA (7th ed.)

Gwynne, P., & Jeffries, B. (1994). Energy and physics. Time Life Asia.

Cita Chicago (17th ed.)

Gwynne, Peter, i Brian Jeffries. Energy and Physics. U.S.A.: Time Life Asia, 1994.

Cita MLA (9th ed.)

Gwynne, Peter, i Brian Jeffries. Energy and Physics. Time Life Asia, 1994.

Atenció: Aquestes cites poden no estar 100% correctes.