Ichthyosaura alpestris (Alpine Newt). In: The IUCN Red List of Threatened Species 2009. IUCN Red List; 2009. e.T59472A11946568.
Triturus carnifex (Italian Crested Newt). In: The IUCN Red List of Threatened Species 2009. IUCN Red List; 2009. e.T59474A11947714.
Triturus cristatus (Northern Crested Newt). In: The IUCN Red List of Threatened Species 2009. IUCN Red List; 2009. e.T22212A9365894.
Triturus dobrogicus (Danube Crested Newt). In: The IUCN Red List of Threatened Species 2009. IUCN Red List; 2009. e.T22216A9366668.