Não informado. (1970). Smoking and health bulletin. U.S. National Clearinghouse for Smoking and Health.
Chicagoスタイル(17版)引用形式Não informado. Smoking and Health Bulletin. Arlington, Va: U.S. National Clearinghouse for Smoking and Health, 1970.
MLA(8版)引用形式Não informado. Smoking and Health Bulletin. U.S. National Clearinghouse for Smoking and Health, 1970.
警告: この引用は必ずしも正確ではありません.