Não informado. (2008). Publications from the Department of Botany, University of Helsinki. University of Helsinki.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Publications from the Department of Botany, University of Helsinki. Helsinki: University of Helsinki, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Publications from the Department of Botany, University of Helsinki. University of Helsinki, 2008.
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