International Colour Association. Congress, Deutscher Verband Farbe, & Richter, M. (1981). AIC Color 81, Berlin, 21.-25. September 1981: Proceedings of the 4th Congress of the International Color Association. AIC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Colour Association. Congress, Deutscher Verband Farbe, और Manfred Richter. AIC Color 81, Berlin, 21.-25. September 1981: Proceedings of the 4th Congress of the International Color Association. Berlin: AIC, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInternational Colour Association. Congress, et al. AIC Color 81, Berlin, 21.-25. September 1981: Proceedings of the 4th Congress of the International Color Association. AIC, 1981.
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