Ditchburn, R. (1963). Light. 2nd ed (2nd ed.). International Publishers.
Cita Chicago (17th ed.)Ditchburn, R.W. Light. 2nd Ed. 2nd ed. New York: International Publishers, 1963.
Cita MLA (9th ed.)Ditchburn, R.W. Light. 2nd Ed. 2nd ed. International Publishers, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.