W. A. . Rizki, N. Nazaruddin, and S. Cicilia, “Pengaruh Rasio Bunga Rosella dan Daun Stevia terhadap Mutu Teh Rosella-Stevia: The effect of the ratio of rosella flower and stevia leaf on the rosella-stevia tea”, profood, vol. 9, no. 1, pp. 89–99, May 2023.