Diamond, J. M. (1999). Guns, germs, and steel: The fates of human societies. Norton.
Lua i Stíl Chicago (17ú heag.)Diamond, Jared M. Guns, Germs, and Steel: The Fates of Human Societies. New York: Norton, 1999.
Lua MLA (8ú heag.)Diamond, Jared M. Guns, Germs, and Steel: The Fates of Human Societies. Norton, 1999.
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