Clark, C. J. (2020). Peruvian Sheartail (Thaumastura cora), version 1.0. In Birds of the World (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pershe2.01 retrieved July 23, 2022
Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 6 June 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htmArchived 2022-01-23 at the Wayback Machine retrieved June 6, 2022
Gill, F.; Donsker, D.; Rasmussen, P., eds. (January 2022). "Hummingbirds". IOC World Bird List. v 12.1. Archived from the original on September 22, 2022. Retrieved January 15, 2022.
Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 6 June 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htmArchived 2022-01-23 at the Wayback Machine retrieved June 6, 2022
worldbirdnames.org
Gill, F.; Donsker, D.; Rasmussen, P., eds. (January 2022). "Hummingbirds". IOC World Bird List. v 12.1. Archived from the original on September 22, 2022. Retrieved January 15, 2022.