Bellairs, A. d., & Attridge, J. (1975). Reptiles (4th (revised) ed.). Hutchinson.
Lua i Stíl Chicago (17ú heag.)Bellairs, Angus d'A, agus John Attridge. Reptiles. 4th (revised) ed. London: Hutchinson, 1975.
Lua MLA (9ú heag.)Bellairs, Angus d'A, agus John Attridge. Reptiles. 4th (revised) ed. Hutchinson, 1975.
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