Não informado. (1944). Public Health Economics. University of Michigan, School of Public Health.
Chicagoスタイル(17版)引用形式Não informado. Public Health Economics. Ann Arbor, Mich: University of Michigan, School of Public Health, 1944.
MLA(8版)引用形式Não informado. Public Health Economics. University of Michigan, School of Public Health, 1944.
警告: この引用は必ずしも正確ではありません.