APA (7th ed.) Citation

Eddington, A. S. (1930). The mathematical theory of relativity (2nd ed.). The University Press.

Chicago Style (17th ed.) Citation

Eddington, Arthur Stanley. The Mathematical Theory of Relativity. 2nd ed. Cambridge [Eng.]: The University Press, 1930.

MLA (8th ed.) Citation

Eddington, Arthur Stanley. The Mathematical Theory of Relativity. 2nd ed. The University Press, 1930.