Não informado. (1927). Contributions from the Dudley Herbarium. Stanford University, Natural History Museum.
Chicago (17e ed.) BronvermeldingNão informado. Contributions from the Dudley Herbarium. Palo Alto, Calif: Stanford University, Natural History Museum, 1927.
MLA (8e ed.) BronvermeldingNão informado. Contributions from the Dudley Herbarium. Stanford University, Natural History Museum, 1927.
Let op: Deze citaties zijn niet altijd 100% accuraat.