Style de citation APA

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.

Style de citation Chicago

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

Style de citation MLA

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