Freeman, M. S. (2009). Rourke's World of Science ENCYCLOPEDIA: Volume 10 - Research Projects/Cumulative Index & Glossary. Rourke Publishing.
Lua i Stíl Chicago (17ú heag.)Freeman, Marcia S. Rourke's World of Science ENCYCLOPEDIA: Volume 10 - Research Projects/Cumulative Index & Glossary. Rourke Publishing, 2009.
Lua MLA (8ú heag.)Freeman, Marcia S. Rourke's World of Science ENCYCLOPEDIA: Volume 10 - Research Projects/Cumulative Index & Glossary. Rourke Publishing, 2009.
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