Woltering, E. J. (1990). Initial events and inter-organ relations during senescence of orchid (Cymbidium) flowers. Landbouwuniversiteit te Wageningen?.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWoltering, Ernst J. Initial Events and Inter-organ Relations During Senescence of Orchid (Cymbidium) Flowers. [Wageningen: Landbouwuniversiteit te Wageningen?, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWoltering, Ernst J. Initial Events and Inter-organ Relations During Senescence of Orchid (Cymbidium) Flowers. Landbouwuniversiteit te Wageningen?, 1990.
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