Krabbe, K.; Isler, M.L.; Isler, P.R.; Whitney, B.M.; Alvarez A., J.; Greenfield, P.J. (1999). "A New Species in the Myrmotherula haematonota Superspecies (Aves; Thamnophilidae) from the Western Amazonian Lowlands of Ecuador and Peru". The Wilson Bulletin. 111 (2): 157–165. JSTOR4164061.