Não informado. (1927). Contributions from the Dudley Herbarium. Stanford University, Natural History Museum.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Contributions from the Dudley Herbarium. Palo Alto, Calif: Stanford University, Natural History Museum, 1927.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Contributions from the Dudley Herbarium. Stanford University, Natural History Museum, 1927.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.