Não informado. Communicable Disease Morbidity Statistics. State Board of Health, Public Health Statistics Section.
Chicago-referens (17:e uppl.)Não informado. Communicable Disease Morbidity Statistics. Raleigh, NC: State Board of Health, Public Health Statistics Section.
MLA-referens (8:e uppl.)Não informado. Communicable Disease Morbidity Statistics. State Board of Health, Public Health Statistics Section.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.