Não informado. (1911). Journal of the Washington Academy of Science. Washington Academy of Sciences.
Chicago (17e ed.) BronvermeldingNão informado. Journal of the Washington Academy of Science. Washington: Washington Academy of Sciences, 1911.
MLA (8e ed.) BronvermeldingNão informado. Journal of the Washington Academy of Science. Washington Academy of Sciences, 1911.
Let op: Deze citaties zijn niet altijd 100% accuraat.