DE SWARDT, D. H. New distribution records: Black-backed Puffback and Barred Wren-warbler in the Free State. Biodiversity Observations, [S. l.], p. 69–71, 2013. Disponível em: https://journals.uct.ac.za/index.php/BO/article/view/191. Acesso em: 23 apr. 2024.