WIDDMAN, P.; LACERNA, I. D. .; DIAZ, S. H. . Aspects of Biology and Conservation of the Philippine Cockatoo Cacatua Haematuropygia on Rasa Island, Palawan, Philippines. Silliman Journal, Dumaguete, Philippines, v. 42, n. 2, 2022. Disponível em: http://sillimanjournal.su.edu.ph/index.php/sj/article/view/238. Acesso em: 21 may. 2024.