Scotland, R., & Wortley, A. (2003). How many species of seed plants are there?
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScotland, R., और A. Wortley. How Many Species of Seed Plants Are There? 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रScotland, R., और A. Wortley. How Many Species of Seed Plants Are There? 2003.
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