RAHMAT, Abbas. Analisis Proyeksi Pasar Wisata Alam Provinsi Sumatera Utara. Jurnal Lingkungan Almuslim, [S. l.], v. 1, n. 2, p. 030–036, 2022. DOI: 10.51179/jla.v1i2.1325. Disponível em: http://journal.umuslim.ac.id/index.php/jla/article/view/1325. Acesso em: 15 des. 2025.