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.
Chicago-referens (17:e uppl.)International Colour Association. Congress, Deutscher Verband Farbe, och Manfred Richter. AIC Color 81, Berlin, 21.-25. September 1981: Proceedings of the 4th Congress of the International Color Association. Berlin: AIC, 1981.
MLA-referens (8:e uppl.)International 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.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.