Kenyon, I. R. (1990). General Relativity. Oxford University Press.
Cita Chicago (17th ed.)Kenyon, Ian R. General Relativity. Nueva York: Oxford University Press, 1990.
Cita MLA (9th ed.)Kenyon, Ian R. General Relativity. Oxford University Press, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.