Robert T. Nowak; Edmund D. Brodie Jr. (1978). "Rib penetration and associated antipredator adaptations in the salamander Pleurodeles waltl (Salamandridae)". Copeia. 1978 (3): 424–429. doi:10.2307/1443606. JSTOR1443606.Parameter |name-list-style= yang tidak diketahui akan diabaikan (bantuan)
Jørn H. Hurum, Zhe-Xi Luo, and Zofia Kielan-Jaworowska, Were mammals originally venomous?, Acta Palaeontologica Polonica 51 (1), 2006: 1-11
jstor.org
Robert T. Nowak; Edmund D. Brodie Jr. (1978). "Rib penetration and associated antipredator adaptations in the salamander Pleurodeles waltl (Salamandridae)". Copeia. 1978 (3): 424–429. doi:10.2307/1443606. JSTOR1443606.Parameter |name-list-style= yang tidak diketahui akan diabaikan (bantuan)