Smith, J. B. (1906). Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; (2nd rev. ed.). J.B. Lippincott Co..
Lua i Stíl Chicago (17ú heag.)Smith, John Bernhard. Economic Entomology for the Farmer and the Fruit Grower, and for Use as a Text-book in Agricultural Schools and Colleges;. 2nd rev. ed. Philadelphia and London: J.B. Lippincott Co., 1906.
Lua MLA (8ú heag.)Smith, John Bernhard. Economic Entomology for the Farmer and the Fruit Grower, and for Use as a Text-book in Agricultural Schools and Colleges;. 2nd rev. ed. J.B. Lippincott Co., 1906.
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