Abdillah, Hasri. “Status of the Northern Pintail Anas Acuta (Anseriformes: Anatidae) in Sumatra”. Bio Palembanica 2, no. 1 (June 25, 2025): 14–18. Accessed September 18, 2026. https://ejournal.uigm.ac.id/index.php/biopalembanica/article/view/5312.