Harris, N. (2009). Rourke's World of Science ENCYCLOPEDIA: Volume 5 - Chemistry. Rourke Publishing.
Lua i Stíl Chicago (17ú heag.)Harris, Nancy. Rourke's World of Science ENCYCLOPEDIA: Volume 5 - Chemistry. Rourke Publishing, 2009.
Lua MLA (8ú heag.)Harris, Nancy. Rourke's World of Science ENCYCLOPEDIA: Volume 5 - Chemistry. Rourke Publishing, 2009.
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