Não informado. (1971). American Journal of Public Health. American Public Health Association.
Chicagoスタイル(17版)引用形式Não informado. American Journal of Public Health. Washington: American Public Health Association, 1971.
MLA(8版)引用形式Não informado. American Journal of Public Health. American Public Health Association, 1971.
警告: この引用は必ずしも正確ではありません.