Dyfyniad APA

International Commission on Illumination. (1983). Recommendations for surface colours for visual signalling. Bureau Central de la CIE.

Dyfyniad Arddull Chicago

International Commission on Illumination. Recommendations for Surface Colours for Visual Signalling. Paris: Bureau Central de la CIE, 1983.

Dyfyniad MLA

International Commission on Illumination. Recommendations for Surface Colours for Visual Signalling. Bureau Central de la CIE, 1983.

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