MÁRMOL, G. M. D.; GENIEZ, P.; NEUMANN, A.; GLAW, F.; FRITZ, U. Phenotypic variability in the western grass snake Natrix astreptophora, with description of a new subspecies from Morocco. Zootaxa, Auckland, New Zealand, v. 5693, n. 1, p. 41–65, 2025. DOI: 10.11646/zootaxa.5693.1.3. Disponível em: https://www.mapress.com/zt/article/view/zootaxa.5693.1.3. Acesso em: 17 sep. 2025.