CROCKETT, J. U. Annuals: The time-life encyclopedia of gardening. Time-Life Books.
Chicago-viite (17. p.)CROCKETT, James Underwood. Annuals: The Time-life Encyclopedia of Gardening. Time-Life Books.
MLA-viite (8. p.)CROCKETT, James Underwood. Annuals: The Time-life Encyclopedia of Gardening. Time-Life Books.
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