APA (7th ed.) Citation

(1990). Toxicological profile for thorium. U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry.

Chicago Style (17th ed.) Citation

Toxicological Profile for Thorium. Atlanta, Georgia: U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry, 1990.

MLA (9th ed.) Citation

Toxicological Profile for Thorium. U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry, 1990.