Saunders, D., Chahine, H., & Cupitt, J. (1996). Long-term Colour Change Measurement: Some Results after Twenty Years. Technical Bulletin.
Lua i Stíl Chicago (17ú heag.)Saunders, David, Helene Chahine, agus John Cupitt. "Long-term Colour Change Measurement: Some Results After Twenty Years." Technical Bulletin 1996.
Lua MLA (8ú heag.)Saunders, David, et al. "Long-term Colour Change Measurement: Some Results After Twenty Years." Technical Bulletin, 1996.
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