Não informado. (1953). Extracts from the proceedings of the Royal Horticultural Society. Royal Horticultural Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Extracts from the Proceedings of the Royal Horticultural Society. London: Royal Horticultural Society, 1953.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Extracts from the Proceedings of the Royal Horticultural Society. Royal Horticultural Society, 1953.
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