Não informado. (1918). Bulletin of the National Institute of Animal Health. National Institute of Animal Health.
Chicago-referens (17:e uppl.)Não informado. Bulletin of the National Institute of Animal Health. Tokyo: National Institute of Animal Health, 1918.
MLA-referens (8:e uppl.)Não informado. Bulletin of the National Institute of Animal Health. National Institute of Animal Health, 1918.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.