V.S.S, Charan, Brundha M.P, and Dhanraj Ganapathy. “Variation in Colour Perception Among Normal Individuals- A Survey”. International Journal of Psychosocial Rehabilitation 24, no. 3 (May 31, 2020): 6708–6714. Accessed February 7, 2026. https://www.psychosocial.com/index.php/ijpr/article/view/4263.