Liddle, A. R. (2003). An introduction to modern cosmology (2nd ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)Liddle, Andrew R. An Introduction to Modern Cosmology. 2nd ed. Chichester ; Hoboken, NJ: Wiley, 2003.
Lua MLA (8ú heag.)Liddle, Andrew R. An Introduction to Modern Cosmology. 2nd ed. Wiley, 2003.
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