SIMARMATA, Vitri; DAMANIK, Darwin; PURBA, Dian G. Analisis Willingness to Pay dan Persepsi Wisatawan Terhadap Konservasi Gajah Aek Nauli di Kabupaten Simalungun . Jurnal Ekuilnomi, [S. l.], v. 4, n. 1, p. 1–13, 2022. DOI: 10.36985/fvs8ym17. Disponível em: http://jurnal.usi.ac.id/index.php/ekuilnomi/article/view/472. Acesso em: 9 sep. 2024.