Não informado. Communicable Disease Morbidity Statistics. State Board of Health, Public Health Statistics Section.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Communicable Disease Morbidity Statistics. Raleigh, NC: State Board of Health, Public Health Statistics Section.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Communicable Disease Morbidity Statistics. State Board of Health, Public Health Statistics Section.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.