↑ Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. (Hydromorphus dunni, p. 77).
Further reading
Boulenger GA (1894). Catalogue of the Snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xi + 382 pp. + Plates I-XX. (Genus Hydromorphus, p.185; species H. concolor, p.185).
Peters W (1859). "Über die von Hrn. Dr. Hoffman in Costa Rica gesammelten und an das Königl. zoologische Museum gesandten Schlangen ". Monatsbericht der Königlichen Preussischen Akademie der Wissenschaften zu Berlin1859: 275-278. (Hydromorphus, new genus, pp.276–277; H. concolor, new species, p.277). (in German).
Slevin JR (1942). "Notes on a Collection of Reptiles from Boquete, Panama, with the Description of a New Species of Hydromorphus ". Proceedings of the California Acadademy of Sciences, Fourth Series23: 463-480 + Plates 39-42. (Hydromorphus dunni, new species, p.474 + Plate 39, figures 1-3).
