“Semi Refine Carrageenan from Seaweed Eucheuma cottonii Various Regional Origins Through Extraction of Various Alkalis: Semi Refine Karagenan dari Rumput Laut Eucheuma cottonii Berbagai Asal Daerah Melalui Ekstraksi Berbagai Alkali”, pssh, vol. 3, pp. 1166–1172, Jul. 2022, doi: 10.21070/pssh.v3i.245.