S. P. Loader, J. C. Poynton, T. R. B. Davenport, and M.-O. Rödel, “Re-description of the type series of Nectophrynoides viviparus (Bufonidae), with a taxonomic reassessment”, Zootaxa, vol. 2304, no. 1, pp. 41–50, Dec. 2009.