1. Alcover J.A., Mayol J., Jaume D., Alomar G., Pomar G. and Jurado J. (1984) Biologia i ecologia de les poblacions relictes de Baleaphryne muletensis a la muntanya Mallorquini. In esHistoria biologia del Ferreret (H.Hemmer and J.A.Alcover, eds) pp. 129–51. Mallorca: Editorial Moll Palma de Mallorca.
2. Alcover J.A., Sanders E. and Sanchiz B. (1994) El registro fosil de los sapos parteros de Baleares. In esHistorio biologia del Ferreret (H.Hemmer and J.A.Alcover, eds) pp. 109–21. Mallorca: Editorial Moll Palma de Mallorca.
3. Barbour T. (1917) Notes on the herpetology of the Virgin Islands. Proc. Biol. Soc. Wash. 30, 97–104.
4. Beck B., Rapaport L., Stanley Price M.R. and Wilson A.C. (1994) Reintroduction of captive born animals. In Creative conservation, interactive management of wild and captive animals (P.J.S.Olney, G.M.Mace and A.T.C.Feistner, eds) pp. 265–86. London: Chapman & Hall.
5. Burke, R.L. (1987) An experimental relocation and reintroduction of a Gopher tortoise population. MSc Thesis, University of Florida, Gainesville.