Samina T. Yousuf AZEEMI, y S. Mohsin RAZA: «A critical analysis of chromotherapy and its scientific evolution», article a Evidence-Based Complementary Alternative Medicine, 2 (4): págs. 481-488; 2005. US National Library of Medicine National Institutes of Health. DOI:10.1093/ecam/neh137. PMC 1297510. PMID: 16322805. Consultat el 8 d'octubre de 2012.