Não informado. (1970). Chest. American College of Chest Physicians.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Chest. Park Ridge, Ill: American College of Chest Physicians, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Chest. American College of Chest Physicians, 1970.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.