Rosyida, Eka, et al. “THE QUALITY ENHANCEMENT OF AGAR EXTRACTED FROM GRACILARIA VERRUCOSA CULTURED IN VARIOUS CONDITIONS OF POSTHARVEST PERIODS”. Pakistan Journal of Biotechnology, vol. 12, no. 1, Mar. 2015, pp. 1-5, https://pjbt.org/index.php/pjbt/article/view/122.