Cunha, H.A. (2005). „Riverine and marine ecotypes of Sotalia dolphins are different species”. Marine Biology148 (2), 449–457. o. DOI:10.1007/s00227-005-0078-2.
Caballero, S. (2007). „Taxonomic status of the genus Sotalia: species level ranking for "tucuxi" (Sotalia fluviatilis) and "costero" (Sotalia guianensis) dolphins”. Marine Mammal Science23 (2), 358–386. o. DOI:10.1111/j.1748-7692.2007.00110.x.
(2010) „PROPOSED ENGLISH COMMON NAME FOR THE NEOTROPICAL DELPHINID SOTALIA GUIANENSIS (P-J. VAN BÉNEDÉN, 1864)”. Latin America Journal of Aquatic Mammals8 (1-2), 179–181. o. DOI:10.5597/lajam00167.
{{{assessors}}} (2008). Sotalia. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 25 February 2009. Includes a lengthy justification of the data deficient category. Treats Sotalia guianensis and Sotalia fluviatilis as subspecies.