MARPOMARI MAHULAE, Porman Juanda. DESKRIPSI PERMASALAHAN UPAYA PENGEMBANGAN PARIWISATA BERKELANJUTAN DI DANAU TOBA SUMATERA UTARA(PROBLEM DESCRIPTION OF SUSTAINABLE TOURISM DEVELOPMENT EFFORT ON TOBA LAKE NORTH SUMATERA). Inovasi, [S. l.], v. 16, n. 1, p. 11–20, 2019. DOI: 10.33626/inovasi.v16i1.130. Disponível em: http://jurnal.bappelitbang.sumutprov.go.id/index.php/inovasi/article/view/130. Acesso em: 15 jun. 2025.