SAROYO, Saroyo; PONTORORING, Hanny H. Pelatihan Identifikasi dan Pengamatan Burung bagi Pemandu Wisata Alam Tangkoko di Kota Bitung. Jurnal Ilmiah Sains, [S. l.], v. 12, n. 1, p. 8–12, 2012. DOI: 10.35799/jis.12.1.2012.395. Disponível em: https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/395. Acesso em: 11 mar. 2026.