Carranza, S., and E. Wade. “Taxonomic Revision of Algero-Tunisian Pleurodeles (Caudata: Salamandridae) Using Molecular and Morphological Data. Revalidation of the Taxon Pleurodeles Nebulosus (Guichenot, 1850)”. Zootaxa, vol. 488, no. 1, Apr. 2004, pp. 1–24, doi:10.11646/zootaxa.488.1.1.