Não informado. Communicable Disease Morbidity Statistics. State Board of Health, Public Health Statistics Section.
Citação do estilo Chicago (17ª ed.)Não informado. Communicable Disease Morbidity Statistics. Raleigh, NC: State Board of Health, Public Health Statistics Section.
Citação MLA (8ª ed.)Não informado. Communicable Disease Morbidity Statistics. State Board of Health, Public Health Statistics Section.
Atenció: Aquestes cites poden no estar 100% correctes.