Ruiz-Esparza, J., Gouveia, S. F., Rocha, P. A. d., Beltrão-Mendes, R., Ribeiro, A. d. S., & Ferrari, S. F. (2011). Birds of the Grota do Angico Natural Monument in the semi-arid Caatinga scrublands of northeastern Brazil. Biota Neotropica, 11(2), . https://doi.org/10.1590/S1676-06032011000200027

Ruiz-Esparza, Juan, Sidney Feitosa Gouveia, Patricio Adriano da Rocha, Raone Beltrão-Mendes, Adauto de Souza Ribeiro, and Stephen Francis Ferrari. "Birds of the Grota Do Angico Natural Monument in the Semi-arid Caatinga Scrublands of Northeastern Brazil." Biota Neotropica 11, no. 2 (2011). https://doi.org/10.1590/S1676-06032011000200027.

Ruiz-Esparza, Juan, et al. "Birds of the Grota Do Angico Natural Monument in the Semi-arid Caatinga Scrublands of Northeastern Brazil." Biota Neotropica, vol. 11, no. 2, 2011, https://doi.org/10.1590/S1676-06032011000200027.