Chronic obstructive pulmonary disease /
[prepared by Division of Lung Diseases, National Heart, Lung, and Blood Institute].

APA Citation

National Heart, L., National Institutes of Health (U.S.). (1981). Chronic obstructive pulmonary disease. [Bethesda, Md.?]: U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health.

MLA Citation

National Heart, Lung, and Blood Institute. Division of Lung Diseases, and National Institutes of Health (U.S.). Chronic Obstructive Pulmonary Disease. [Bethesda, Md.?]: U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, 1981.