Não informado. (1998). American journal of hygiene. Johns Hopkins University, School of Hygiene and Public Health.
Chicagoスタイル(17版)引用形式Não informado. American Journal of Hygiene. Baltimore, Md: Johns Hopkins University, School of Hygiene and Public Health, 1998.
MLA(8版)引用形式Não informado. American Journal of Hygiene. Johns Hopkins University, School of Hygiene and Public Health, 1998.
警告: この引用は必ずしも正確ではありません.