Costantini David, Dell’omo Giacomo, Casagrande Stefania, Fabiani Anna, Carosi Monica, Bertacche Vittorio, Marquez Cruz, Snell Howard, Snell Heidi, Tapia Washington & Gentile Gabriele, October 2005 — Inter-population variation of carotenoids in Galápagos land iguanas (Conolophus subcristatus). Comp. Biochem. Physiol. B, Biochem. Mol. Biol. vol. 142, n° 2, p. 239-244 ISSN 1096-4959 https://dx.doi.org/10.1016/j.cbpb.2005.07.011