Tambunan, Ayu Anggraini, et al. “The Role of Creative Economics in Sei Nagalawan Mangrove Ecotourism Sector”. Jurnal Penelitian Pendidikan IPA, vol. 10, no. SpecialIssue, Aug. 2024, pp. 505-13, doi:10.29303/jppipa.v10iSpecialIssue.6146.