(in Spanish) Vergara D. & Velásquez L. E. (2009). "LARVAS DE DIGENEA EN Melanoides tuberculata (GASTROPODA: THIARIDAE) EN MEDELLÍN, COLOMBIA. Larval stages of digenea from Melanoides tuberculata (Gastropoda: Thiaridae) in Medellín, Colombia". Acta Biológica Colombiana14(1): 135-142. abstractArchived 2012-03-22 at the Wayback Machine, PDFArchived 2012-03-22 at the Wayback Machine.
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(in Spanish) Vergara D. & Velásquez L. E. (2009). "LARVAS DE DIGENEA EN Melanoides tuberculata (GASTROPODA: THIARIDAE) EN MEDELLÍN, COLOMBIA. Larval stages of digenea from Melanoides tuberculata (Gastropoda: Thiaridae) in Medellín, Colombia". Acta Biológica Colombiana14(1): 135-142. abstractArchived 2012-03-22 at the Wayback Machine, PDFArchived 2012-03-22 at the Wayback Machine.