Rujukan Yokohama (ayam)

  1. 1 2 3 4 Rassetafeln: Yokohama (in German). Bund Deutscher Rassegeflügelzüchter. Accessed January 2017.
  2. 1 2 3 Rassetafeln: Zwerg-Yokohama (in German). Bund Deutscher Rassegeflügelzüchter. Accessed January 2017.
  3. 1 2 APA Recognized Breeds and Varieties: As of January 1, 2012. American Poultry Association. Archived 4 November 2017.
  4. 1 2 Liste des races et variétés homologuée dans les pays EE (28.04.2013). Entente Européenne d’Aviculture et de Cuniculture. Archived 16 June 2013.
  5. ↑ Breed Classification. Poultry Club of Great Britain. Archived 12 June 2018.
  6. 1 2 3 4 5 Victoria Roberts (2008). British poultry standards: complete specifications and judging points of all standardized breeds and varieties of poultry as compiled by the specialist breed clubs and recognised by the Poultry Club of Great Britain. Oxford: Blackwell. ISBN 9781405156424.
  7. ↑ Erika Arita (24 May 2009). Happy Birthday Yokohama!. The Japan Times. Accessed January 2017.
  8. 1 2 Yokohama Chicken. The Livestock Conservancy. Accessed January 2017.
  9. ↑ Jean Bungartz (1885). Geflügel-Album (in German, with 150 illustrations). Lechenich: Ferd. Bungartz.
  10. 1 2 [s.n.] (2008). Yokohama (in German; page 1, page 2). Sonderverein der Züchter der Sumatra, Zwerg-Sumatra, Yokohama und Zwerg-Yokohama. Accessed January 2017.
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