Johan, Y. (2017) “Analysis of Marine Ecotourism Suitability for Diving and Snorkeling Activities in Enggano Island”, International Journal of Sciences: Basic and Applied Research (IJSBAR), 36(6), pp. 202–212. Available at: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/7878 (Accessed: 12 September 2025).