Não informado. (1970). Chest. American College of Chest Physicians.
Chicagoスタイル(17版)引用形式Não informado. Chest. Park Ridge, Ill: American College of Chest Physicians, 1970.
MLA(8版)引用形式Não informado. Chest. American College of Chest Physicians, 1970.
警告: この引用は必ずしも正確ではありません.