Não informado. (2001). Studies from the Division of Laboratories and Research. New York State Department of Health.
Citação do estilo Chicago (17ª ed.)Não informado. Studies from the Division of Laboratories and Research. Albany, NY: New York State Department of Health, 2001.
Citação MLA (8ª ed.)Não informado. Studies from the Division of Laboratories and Research. New York State Department of Health, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.