Booth, E. S. (1942). Field key to the amphibians and reptiles of the Northwest. Walla Walla College?].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBooth, Ernest S. Field Key to the Amphibians and Reptiles of the Northwest. [College Place, Wash.: Walla Walla College?], 1942.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBooth, Ernest S. Field Key to the Amphibians and Reptiles of the Northwest. Walla Walla College?], 1942.
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