Trauth, Stanley E. (1978). "Ovarian Cycle of Crotaphytus collaris (Reptilia, Lacertilia, Iguanidae) from Arkansas with Emphasis on Corpora Albicantia, Follicular Atresia, and Reproductive Potential". Journal of Herpetology. 12 (4): 461–470. doi:10.2307/1563350. ISSN0022-1511. JSTOR1563350.
iupac.org
media.iupac.org
Brian Davis. Carotenoid metabolism as a preparation for function. Pure and Applied Chemistry, Vol. 63, No. 1, pp. 131–140, 1991. available online.Archived 2011-07-26 at the Wayback Machine Accessed April 30, 2010.
jstor.org
Trauth, Stanley E. (1978). "Ovarian Cycle of Crotaphytus collaris (Reptilia, Lacertilia, Iguanidae) from Arkansas with Emphasis on Corpora Albicantia, Follicular Atresia, and Reproductive Potential". Journal of Herpetology. 12 (4): 461–470. doi:10.2307/1563350. ISSN0022-1511. JSTOR1563350.
Brian Davis. Carotenoid metabolism as a preparation for function. Pure and Applied Chemistry, Vol. 63, No. 1, pp. 131–140, 1991. available online.Archived 2011-07-26 at the Wayback Machine Accessed April 30, 2010.
Trauth, Stanley E. (1978). "Ovarian Cycle of Crotaphytus collaris (Reptilia, Lacertilia, Iguanidae) from Arkansas with Emphasis on Corpora Albicantia, Follicular Atresia, and Reproductive Potential". Journal of Herpetology. 12 (4): 461–470. doi:10.2307/1563350. ISSN0022-1511. JSTOR1563350.