Não informado. (2020). Reports of the Secretary and Treasurer. John Simon Guggenheim Memorial Foundation.
Chicago (17e ed.) BronvermeldingNão informado. Reports of the Secretary and Treasurer. New York: John Simon Guggenheim Memorial Foundation, 2020.
MLA (8e ed.) BronvermeldingNão informado. Reports of the Secretary and Treasurer. John Simon Guggenheim Memorial Foundation, 2020.
Let op: Deze citaties zijn niet altijd 100% accuraat.