Não informado. Plant Immigrants. U.S. Department of Agriculture, Bureau of Plant Industry.
Čikaški stil citiranja (17. izdanje)Não informado. Plant Immigrants. Washington: U.S. Department of Agriculture, Bureau of Plant Industry.
MLA način citiranja (8. izdanje)Não informado. Plant Immigrants. U.S. Department of Agriculture, Bureau of Plant Industry.
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