A Comparative Analysis of Clitoria ternatea Linn. (Butterfly Pea) Flower Extract as Natural Liquid pH Indicator and Natural pH Paper. Dhaka Univ. J. Pharm. Sci [Internet]. 2018 Jun. 24 [cited 2026 Jun. 28];17(1):97-103. Available from: https://www.banglajol.info/index.php/JPharma/article/view/37125