CUNNINGHAM, P.; THOMSON, N. Southern Double-collared Sunbird Cinnyris chalybeus and Malachite Sunbird Nectarinia famosa presence in southern Namibia. Biodiversity Observations, [S. l.], v. 7, p. 1–4, 2016. Disponível em: https://journals.uct.ac.za/index.php/BO/article/view/307. Acesso em: 30 jun. 2022.