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Fitzpatrick, J. W., D. A. Christie, and G. M. Kirwan (2020). Slender-footed Tyrannulet (Zimmerius gracilipes), 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.slftyr1.01 retrieved November 12, 2024
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Rheindt, F.E.; Norman, J.A.; Christidis, L. (2008). "DNA evidence shows vocalizations to be better indicator of taxonomic limits than plumage patterns in Zimmerius tyrant-flycatchers". Molecular Evolution and Phylogenetics. 48 (1): 150–156. Bibcode:2008MolPE..48..150R. doi:10.1016/j.ympev.2008.04.016.
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