Whittaker, A., Aleixo, A., Whitney, B.M., Smith, B.T. & Klicka, J. 2013. A distinctive new species of gnatcatcher in the Polioptila guianensis complex (Aves: Polioptilidae) from western Amazonian Brazil. pp.301-305. In: del Hoyo, J., Elliott, A. & Christie D. (Org.). Handbook of the Birds of the World, Special Volume: New Species and Global Index. 1ed. Barcelona: Lynx Edicions. Full article (PDF)