Παραπομπή APA

Singh, A. K. (2016). Problems in physics (4th ed.). New Age International Publishers.

Παραπομπή Chicago Style

Singh, Abhay Kumar. Problems in Physics. 4th ed. New Delhi: New Age International Publishers, 2016.

Παραπομπή MLA

Singh, Abhay Kumar. Problems in Physics. 4th ed. New Age International Publishers, 2016.