Cita APA (7th ed.)

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.