Zaenab, Z. “Application of Anthocyanin Extract from Purple Sweet Potato (Ipomoea Batatas L.) As a Natural Indicator for Borax Detection in Puli Crackers”. Journal of Public Health and Pharmacy, Vol. 6, no. 1, Jan. 2026, pp. 171-9, doi:10.56338/jphp.v6i1.7321.