The following references contain information on Atlapetes pallidiceps:

Agreda, A., Krabbe, N., Rodriguez, O., 1999. Pale-headed Brush-finch Atlapetes pallidiceps is not extinct. Cotinga 11, 50–54.

Collar, N.J., Gonzaga, L.P., Krabbe, N., Nieto, A.M., Naranjo, L.G., Parker, T.A., Wege, D.C., 1992. Threatened Birds of the Americas. International Council for Bird Preservation, Cambridge.

Krabbe, N. 2004. Pale-headed Brush-finch Atlapetes pallidiceps: notes on population size, habitat, vocalizations, feeding, interference competition, and conservation. Bird Conservation International 14: 77-86.

Oppel, S., Schaefer, H. M. and Schmidt, V. 2003. Description of the nest, eggs, and breeding behavior of the endangered Pale-headed Brush-Finch (Atlapetes pallidiceps) in Ecuador. Wilson Bulletin 115: 360-366.

Oppel, S., Schaefer, H. M., Schmidt, V., Schröder, B. 2004a. Habitat selection by the Pale-headed brush-finch (Atlapetes pallidiceps) in southern Ecuador: implications for conservation. Biological Conservation 118 (2004) 33–40.

Oppel, S., Schaefer, H. M., Schmidt, V., Schröder, B. 2004b. Cowbird parasitism of Pale-headed Brush-finch Atlapetes pallidiceps: implications for conservation and management. Bird Conservation International 14: 63-75.

Oppel, S., Schaefer, H. M., Schmidt, V., Schröder, B. 2004c. How much suitable habitat is left for the last known population of the Pale-headed Brush-Finch? The Condor 106: 429-434.

Paynter, R.A., 1972. Biology and evolution of the Atlapetes schistaceus species-group. Bulletin Museum of Comparative Zoology 143, 297–320.

Paynter, R.A., 1978. Biology and evolution of the avian genus Atlapetes. Bulletin Museum of Comparative Zoology 148, 323–369.

Ridgely, R. S. and Greenfield, P. J. 2001. The birds of Ecuador. 2 vols. Ithaca, New York: Cornell University Press.