1. Wafer L: New Voyage and Description of the Isthmus of America, Giving an Account of the Author’s Abode There. London, 1699, p 134 (Cited by Pearson K: A Monograph on Albinism in Man. Drapers’ Company Research Memoirs, Biometrie Series VI, Part I. London, Dulau, 1911–1913, pp 17–18
2. Little CC: Coat color genes in rodents and carnivores. Q Rev Biol 33: 103–317, 1958
3. Noble GK: The Biology of the Amphibia. New York, Dover, 1954, p 577
4. Searle AG: Comparative Genetics of Coat Colour in Mammals. London, Logos ( New York, Academic ), 1968
5. Shufeldt RW: Albinism in American animals. Proc Zool Soc Lond, p 540, 1916