Adetuyi, A. O., L. Lajide, and A. V. Popoola. “Effect of Base Media on the Stability of Annatto Dye in Industrial Products”. Biological Sciences - PJSIR 49, no. 6 (December 25, 2006): 391–394. Accessed June 8, 2025. http://www.biostaging.pjsir.org/index.php/biological-sciences/article/view/1264.