Sharaswati, Ratna and M.N M (2018) “A Correlation between Knowledge about Coral Reef Ecosystem and Marine Tourist Attitude toward Conservation at Pramuka Island, Kepulauan Seribu”, Biosfer: Jurnal Pendidikan Biologi, 8(1), pp. 34–38. doi: 10.21009/biosferjpb.8-1.5.