Cita APA (7th ed.)
Singh, A. K. (2000). Problems in physics (4th ed.). New Age International.
Cita Chicago (17th ed.)
Singh, Abhay Kumar. Problems in Physics. 4th ed. Calcutta: New Age International, 2000.
Cita MLA (9th ed.)
Singh, Abhay Kumar. Problems in Physics. 4th ed. New Age International, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.