CROCKETT, J. U. (1979). Lawns And Ground Covers James Underwood Crockett. Time-Life Books.
Chicago-viite (17. p.)CROCKETT, James Underwood. Lawns And Ground Covers James Underwood Crockett. Time-Life Books, 1979.
MLA-viite (8. p.)CROCKETT, James Underwood. Lawns And Ground Covers James Underwood Crockett. Time-Life Books, 1979.
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