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[Title:A syndrome of mutualism reinforces the lifestyle of a sloth Authors:Jonathan N. Pauli, Jorge E. Mendoza, Shawn A. Steffan, Cayelan C.Carey, Paul J. Weimer and M. Zachariah Peery Journal:Proceedings of the Royal Society B „Welcome to the US Petabox“]. 2013-yil 15-iyulda asl nusxadan arxivlangan.
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Dowling, Stephen. „Why do sloths move so slowly?“. BBC Future. BBC News (2019-yil 29-avgust). 2019-yil 12-sentyabrda asl nusxadan arxivlangan. Qaraldi: 2019-yil 2-sentyabr.
O'Leary, Maureen A.; Bloch, Jonathan I.; Flynn, John J.; Gaudin, Timothy J.; Giallombardo, Andres; Giannini, Norberto P.; Goldberg, Suzann L.; Kraatz, Brian P. et al. (2013-02-08). "The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals" (en). Science339 (6120): 662–667. doi:10.1126/science.1229237. ISSN0036-8075. PMID23393258.
Gaudin, T.J. (2004-02-01). "Phylogenetic relationships among sloths (Mammalia, Xenarthra, Tardigrada): the craniodental evidence". Zoological Journal of the Linnean Society140 (2): 255–305. doi:10.1111/j.1096-3642.2003.00100.x. ISSN0024-4082.
Aguiar-Silva, F. Helena; Sanaiotti, Tânia M.; Luz, Benjamim B. (2014-03-01). "Food Habits of the Harpy Eagle, a Top Predator from the Amazonian Rainforest Canopy". Journal of Raptor Research48 (1): 24–35. doi:10.3356/JRR-13-00017.1. ISSN0892-1016.
Gilmore, D. P.; Da Costa, C. P.; Duarte, D. P. F. (2001-01-01). "Sloth biology: an update on their physiological ecology, behavior and role as vectors of arthropods and arboviruses". Brazilian Journal of Medical and Biological Research34 (1): 9–25. doi:10.1590/S0100-879X2001000100002. ISSN0100-879X. PMID11151024.
Soares, C. A.; Carneiro, R. S. (2002-05-01). "Social behavior between mothers × young of sloths Bradypus variegatus SCHINZ, 1825 (Xenarthra: Bradypodidae)". Brazilian Journal of Biology62 (2): 249–252. doi:10.1590/S1519-69842002000200008. ISSN1519-6984. PMID12489397.