CROCKETT, J. U. (1978). Trees James Underwood Crockett. Time-Life Books.
Cita Chicago Style (17a ed.)CROCKETT, James Underwood. Trees James Underwood Crockett. Time-Life Books, 1978.
Cita MLA (8a ed.)CROCKETT, James Underwood. Trees James Underwood Crockett. Time-Life Books, 1978.
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