Lyons, C. P. (1956). Trees, shrubs, and flowers to know in Washington. Dent.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLyons, C. P. Trees, Shrubs, and Flowers to Know in Washington. Toronto: Dent, 1956.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLyons, C. P. Trees, Shrubs, and Flowers to Know in Washington. Dent, 1956.
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