Collar, N., P. F. D. Boesman, and A. Bonan (2020). Spot-winged Parrotlet (Touit stictopterus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.spwpar2.01 retrieved 20 February 2023