International Commission on Illumination. (1975). Colors of light signals: Official recommendations. Bureau Central de la CIE.
Citace podle Chicago (17th ed.)International Commission on Illumination. Colors of Light Signals: Official Recommendations. Paris: Bureau Central de la CIE, 1975.
Citace podle MLA (8th ed.)International Commission on Illumination. Colors of Light Signals: Official Recommendations. Bureau Central de la CIE, 1975.
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