एपीए उद्धरण

Società italiana di fisica, International School of Physics "Enrico Fermi", & Sachs, R. K. (1971). General relativity and cosmology: Proceedings of the International School of Physics Enrico Fermi. Academic Press.

शिकागो स्टाइल उद्धरण

Società italiana di fisica, International School of Physics "Enrico Fermi", और R. K. Sachs. General Relativity and Cosmology: Proceedings of the International School of Physics Enrico Fermi. New York: Academic Press, 1971.

एमएलए उद्धरण

Società italiana di fisica, et al. General Relativity and Cosmology: Proceedings of the International School of Physics Enrico Fermi. Academic Press, 1971.