Gaya APA

Y, M, P, H, G, P, E, , A, A, ., N, ., L, A, S, E, N, B. (2006). General Relativity An Introduction for Physicists . New York: Cambaridge University Press.

Gaya MLA

Y, M., P., HOBSON;, G., P., EFSTATHIOU, , And, A, ., N, ., L, A, S, E, N, B. "General Relativity An Introduction for Physicists". New York: Cambaridge University Press, 2006. Text.