APA (7th ed.) Citation

National Library of Medicine (U.S.) & United States. Environmental Protection Agency. (1999). Integrated risk information system (IRIS. National Library of Medicine.

Chicago Style (17th ed.) Citation

National Library of Medicine (U.S.) and United States. Environmental Protection Agency. Integrated Risk Information System (IRIS. Bethesda, Md.: National Library of Medicine, 1999.

MLA (9th ed.) Citation

National Library of Medicine (U.S.) and United States. Environmental Protection Agency. Integrated Risk Information System (IRIS. National Library of Medicine, 1999.