Não informado. (2002). CA selects. Chemical Abstracts Service, American Chemical Society.
Lua i Stíl Chicago (17ú heag.)Não informado. CA Selects. Columbus, Ohio: Chemical Abstracts Service, American Chemical Society, 2002.
Lua MLA (8ú heag.)Não informado. CA Selects. Chemical Abstracts Service, American Chemical Society, 2002.
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