Παραπομπή APA

George, G. (1965). Gravity. Vakil, Feffer and Simons Pvt. ltd.

Παραπομπή Chicago Style

George, Gamow. Gravity. Bombay: Vakil, Feffer and Simons Pvt. ltd, 1965.

Παραπομπή MLA

George, Gamow. Gravity. Vakil, Feffer and Simons Pvt. ltd, 1965.