SANTOSA, Yanto; PERDANA, Anxious Yoga; SOPIYANDI, Sandi; YOHANNA, Yohanna. Bird Diversity in Smallholders Oil Palm Plantation in Riau Province. International Journal of Oil Palm, [S. l.], v. 1, n. 1, p. 28–37, 2018. DOI: 10.35876/ijop.v1i1.4. Disponível em: https://ijop.id/index.php/ijop/article/view/4. Acesso em: 11 sep. 2025.