Kommedahl, T. (1983). Challenging problems in plant health. American Phytopathological Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKommedahl, Thor. Challenging Problems in Plant Health. American Phytopathological Society, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKommedahl, Thor. Challenging Problems in Plant Health. American Phytopathological Society, 1983.
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