Jeffries, B. J. (1879). Color-blindness: Its dangers and its detection. Houghton, Osgood and Company.
Lua i Stíl Chicago (17ú heag.)Jeffries, B. Joy. Color-blindness: Its Dangers and Its Detection. Boston: Houghton, Osgood and Company, 1879.
Lua MLA (8ú heag.)Jeffries, B. Joy. Color-blindness: Its Dangers and Its Detection. Houghton, Osgood and Company, 1879.
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