Não informado. (2001). Zoonoses surveillance. Center for Disease Control, Department of Health, Education Welfare.
Chicago-Zitierstil (17. Ausg.)Não informado. Zoonoses Surveillance. Atlanta, Ga: Center for Disease Control, Department of Health, Education Welfare, 2001.
MLA-Zitierstil (8. Ausg.)Não informado. Zoonoses Surveillance. Center for Disease Control, Department of Health, Education Welfare, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.