Não informado. Smithsonian opportunities for research and study in history, art, science. Smithsonian Institution, Board of Academic Studies.
Čikaški stil citiranja (17. izdanje)Não informado. Smithsonian Opportunities for Research and Study in History, Art, Science. Washington: Smithsonian Institution, Board of Academic Studies.
MLA način citiranja (8. izdanje)Não informado. Smithsonian Opportunities for Research and Study in History, Art, Science. Smithsonian Institution, Board of Academic Studies.
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