Instituto Brasileiro de Informação em Ciência e Tecnologia

Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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