Não informado. (2020). Reports of the Secretary and Treasurer. John Simon Guggenheim Memorial Foundation.
Chicago Style (17. basım) AtıfNão informado. Reports of the Secretary and Treasurer. New York: John Simon Guggenheim Memorial Foundation, 2020.
MLA (8th ed.) AtıfNão informado. Reports of the Secretary and Treasurer. John Simon Guggenheim Memorial Foundation, 2020.
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