CROCKETT, J. U. Annuals: The time-life encyclopedia of gardening. Time-Life Books.
Čikaški stil citiranja (17. izdanje)CROCKETT, James Underwood. Annuals: The Time-life Encyclopedia of Gardening. Time-Life Books.
MLA način citiranja (8. izdanje)CROCKETT, James Underwood. Annuals: The Time-life Encyclopedia of Gardening. Time-Life Books.
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