Temminck, C.J.; Laugier de Chartrouse, G.M.J.M. (1821–1838). Nouveau recueil de planches coloriées d'oiseaux, pour servir de suite et de complément aux planches enluminées de Buffon, édition in-folio et in-4° de l'Imprimerie nationale, 1770 (in French). Vol. IV. Levrault, Paris. pp. 83–84. doi:10.5962/bhl.title.51468.BHLpage 35465192 , BHLpage 35465195
Temminck, C.J.; Laugier de Chartrouse, G.M.J.M. (1821–1838). Nouveau recueil de planches coloriées d'oiseaux, pour servir de suite et de complément aux planches enluminées de Buffon, édition in-folio et in-4° de l'Imprimerie nationale, 1770 (in French). Vol. IV. Levrault, Paris. pp. 83–84. doi:10.5962/bhl.title.51468.BHLpage 35465192 , BHLpage 35465195
Schuchmann, K.L.; Kirwan, G. M.; Boesman, P. F. D. (December 15, 2021). Del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi; Christie, David; De Juana, Eduardo (eds.). "Horned Sungem (Heliactin bilophus)". Birds of the World. Cornell Lab of Ornithology. doi:10.2173/bow.horsun2.01. S2CID242933406. Archived from the original on February 16, 2024. Retrieved February 16, 2024.
Remsen, J.V. Jr.; Areta, J.I.; Bonaccorso, E.; Claramunt, S.; Jaramillo, A.; Lane, D.F.; Pacheco, J.F.; Robbins, M.B.; Stiles, F.G.; Zimmer, K.J. (2021). "A classification of the bird species of South America. Part 3. Apodiformes". American Ornithological Society. Archived from the original on September 25, 2023. Retrieved January 28, 2024.
Schuchmann, K.L.; Kirwan, G. M.; Boesman, P. F. D. (December 15, 2021). Del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi; Christie, David; De Juana, Eduardo (eds.). "Horned Sungem (Heliactin bilophus)". Birds of the World. Cornell Lab of Ornithology. doi:10.2173/bow.horsun2.01. S2CID242933406. Archived from the original on February 16, 2024. Retrieved February 16, 2024.
Schuchmann, K.L.; Kirwan, G. M.; Boesman, P. F. D. (December 15, 2021). Del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi; Christie, David; De Juana, Eduardo (eds.). "Horned Sungem (Heliactin bilophus)". Birds of the World. Cornell Lab of Ornithology. doi:10.2173/bow.horsun2.01. S2CID242933406. Archived from the original on February 16, 2024. Retrieved February 16, 2024.
Gill, F.; Donsker, D.; Rasmussen, P. (July 2021). "IOC World Bird List (v 14.1)". Archived from the original on October 4, 2020. Retrieved February 20, 2024.
Remsen, J.V. Jr.; Areta, J.I.; Bonaccorso, E.; Claramunt, S.; Jaramillo, A.; Lane, D.F.; Pacheco, J.F.; Robbins, M.B.; Stiles, F.G.; Zimmer, K.J. (2021). "A classification of the bird species of South America. Part 3. Apodiformes". American Ornithological Society. Archived from the original on September 25, 2023. Retrieved January 28, 2024.
Marini, M.Â; Borges, F.J.A; Lopes, L.E.; Sousa, N.O.M; Gressler, D.T.; Santos, L.R.; Paiva, L.V.; Duca, C.; Manica, L.T.; Rodrigues, S.S. (2012). "Breeding biology of birds in the Cerrado of central Brazil"(PDF). Ornitologia Neotropical. 23 (3): 385–405. Archived from the original(PDF) on 2024-02-16. Retrieved 2024-02-05.
worldbirdnames.org
Gill, F.; Donsker, D.; Rasmussen, P. (July 2021). "IOC World Bird List (v 14.1)". Archived from the original on October 4, 2020. Retrieved February 20, 2024.