Não informado. (2003). Chest. American College of Chest Physicians.
Cita Chicago Style (17a ed.)Não informado. Chest. Chicago, Ill: American College of Chest Physicians, 2003.
Cita MLA (8a ed.)Não informado. Chest. American College of Chest Physicians, 2003.
Precaución: Estas citas no son 100% exactas.