S. ANA, S. PAUL, A. F. LADAN, G. E. ADEKAYERO, and M. Y. ABUBAKAR, “EXTRACTION AND OPTIMIZATION OF DYEING CONDITIONS OF DYE OBTAINED FROM PURPLE SWEET POTATO ON COTTON FABRICS”, Int J Chem Res, vol. 10, no. 1, pp. 49–54, Jan. 2026.