Cita APA (7th ed.)
Helliwell, T. (1966). Introduction to special relativity.
Cita Chicago (17th ed.)
Helliwell, T.M. Introduction to Special Relativity. 1966.
Cita MLA (9th ed.)
Helliwell, T.M. Introduction to Special Relativity. 1966.
Atenció: Aquestes cites poden no estar 100% correctes.