Wati, Indah, and Ida Agustini Saidi. 2015. “Use of Seaweed (Eucheumacottonii) As a Substitute for Carrageenan in Making Jelly Drink Rosella (Study of Seaweed and Carrageenan Concentration)”. Nabatia 3 (1), 43-50. https://doi.org/10.21070/nabatia.v12i1.1595.