Παραπομπή APA

Bergman, P. G. (1987). Introduction to the theory of relativity.

Παραπομπή Chicago Style

Bergman, Peter Gabriel. Introduction to the Theory of Relativity. New Delhi, Prentice-Hall, 1987.

Παραπομπή MLA

Bergman, Peter Gabriel. Introduction to the Theory of Relativity. 1987.