APA (7th ed.) Citation

National Institutes of Health (U.S.). (2000). Risk factors for COPD. National Institutes of Health.

Chicago Style (17th ed.) Citation

National Institutes of Health (U.S.). Risk Factors for COPD. [Bethesda, Md.]: National Institutes of Health, 2000.

MLA (9th ed.) Citation

National Institutes of Health (U.S.). Risk Factors for COPD. National Institutes of Health, 2000.

Warning: These citations may not always be 100% accurate.