Não informado. (1969). Occasional papers of the Farlow Herbarium of Cryptogamic Botany. Harvard University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Occasional Papers of the Farlow Herbarium of Cryptogamic Botany. Cambridge, Mass: Harvard University, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Occasional Papers of the Farlow Herbarium of Cryptogamic Botany. Harvard University, 1969.
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