Não informado. (2008). Journal of Swine Health and Production. American Association of Swine Veterinarians.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of Swine Health and Production. Perry, Iowa: American Association of Swine Veterinarians, 2008.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of Swine Health and Production. American Association of Swine Veterinarians, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.