APA (7e ed.) Bronvermelding

Não informado. (1891). Contributions from the Gray Herbarium of Harvard University. Harvard University.

Chicago (17e ed.) Bronvermelding

Não informado. Contributions from the Gray Herbarium of Harvard University. Cambridge, Mass: Harvard University, 1891.

MLA (8e ed.) Bronvermelding

Não informado. Contributions from the Gray Herbarium of Harvard University. Harvard University, 1891.

Let op: Deze citaties zijn niet altijd 100% accuraat.