Jennings, J. E. (1896). Color-vision and color-blindness: A practical manual for railroad surgeons. F. A. Davis.
Lua i Stíl Chicago (17ú heag.)Jennings, John Ellis. Color-vision and Color-blindness: A Practical Manual for Railroad Surgeons. Philadelphia: F. A. Davis, 1896.
Lua MLA (8ú heag.)Jennings, John Ellis. Color-vision and Color-blindness: A Practical Manual for Railroad Surgeons. F. A. Davis, 1896.
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