Peebles, P. J. E. (1971). Physical cosmology. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Peebles, P. J. E. Physical Cosmology. Princeton, New Jersey: Princeton University Press, 1971.
Lua MLA (9ú heag.)Peebles, P. J. E. Physical Cosmology. Princeton University Press, 1971.
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