Nguyen NT, Pham DD, Vo TLH. Fabrication of a Visual pH Indicator Based on Cellulosic Materials and Anthocyanin Dyes Extracted from Red Cabbage. old [Internet]. 2018 Apr. 15 [cited 2025 Aug. 2];(125):71-5. Available from: https://jst.vn/index.php/old/article/view/824