LAIQA ANJUM, et al. “A VALIDATED QUANTITATIVE DETERMINATION OF ALIZARIN IN RUBIA CORDIFOLIA LINN. BY ISOCRATIC RP-HPLC”. International Journal of Pharma and Bio Sciences, vol. 5, no. 4, Sept. 2014, pp. 1-6, https://ijpbs.net/index.php/journal/article/view/3252.