Bernal, M.A. and Rocha, L.A. 2011. Acanthurus tractus Poey, 1860, a valid western Atlantic species of surgeonfish (Teleostei, Acanthuridae), distinct from Acanthurus bahianus Castelnau, 1855. Zootaxa. 2905, 1 (Jun. 2011), 63–68. DOI:https://doi.org/10.11646/zootaxa.2905.1.5.