GJERSHAUG, J. O.; LERNER, H. R. L.; DISERUD, O. H. Taxonomy and distribution of the Pygmy Eagle Aquila (Hieraaetus) weiskei (Accipitriformes: Accipitridae). Zootaxa, Auckland, New Zealand, v. 2326, n. 1, p. 24–38, 2009. DOI: 10.11646/zootaxa.2326.1.2. Disponível em: https://mapress.com/zt/article/view/zootaxa.2326.1.2. Acesso em: 17 apr. 2025.