Bronce, R. A., Acosta, L. M. M., De Ramos, D. T., Solis, J. V. M., & 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, 20–24. Retrieved from https://ojs.batstate-u.edu.ph/index.php/IRJIEST/article/view/36