APA (7th ed.) Citation

National Cancer Institute (U.S.). (2008). Constipation. U.S. Dept. of Health and Human Services, National Institutes of Health.

Chicago Style (17th ed.) Citation

National Cancer Institute (U.S.). Constipation. [Bethesda, Md.]: U.S. Dept. of Health and Human Services, National Institutes of Health, 2008.

MLA (9th ed.) Citation

National Cancer Institute (U.S.). Constipation. U.S. Dept. of Health and Human Services, National Institutes of Health, 2008.