Bronce, R. A., Acosta, L. M. M., De Ramos, D. T., Solis, J. V. M. and Perez, I. F. R. (2018) “Isolation of anthocyanin from Hibiscus rosa-sinensis flower and its utilization as food colorant”, International Research Journal on Innovations in Engineering, Science and Technology, 4, pp. 20–24. Available at: https://ojs.batstate-u.edu.ph/index.php/IRJIEST/article/view/36 (Accessed: 24 November 2024).