CROCKETT, J. U. (1975). Evergreens James Underwood Crockett. Time-Life Books.
Lua i Stíl Chicago (17ú heag.)CROCKETT, James Underwood. Evergreens James Underwood Crockett. Time-Life Books, 1975.
Lua MLA (8ú heag.)CROCKETT, James Underwood. Evergreens James Underwood Crockett. Time-Life Books, 1975.
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