Não informado. (1890). Contributions from the United States National Herbarium. Smithsonian Institution.
Chicago (17e ed.) BronvermeldingNão informado. Contributions from the United States National Herbarium. Washington: Smithsonian Institution, 1890.
MLA (8e ed.) BronvermeldingNão informado. Contributions from the United States National Herbarium. Smithsonian Institution, 1890.
Let op: Deze citaties zijn niet altijd 100% accuraat.