Powell, J. W. (1903). Linguistic stocks of American Indians North of Mexico (Rev.). Bureau of American Ethnology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPowell, John Wesley. Linguistic Stocks of American Indians North of Mexico. Rev. Washington, D.C.: Bureau of American Ethnology, 1903.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPowell, John Wesley. Linguistic Stocks of American Indians North of Mexico. Rev. Bureau of American Ethnology, 1903.
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