United States. Environmental Protection Agency. Office of Radiation and Indoor Air. (1999). Technologically enhanced naturally occurring radioactive materials in the southwestern copper belt of Arizona. U.S. Environmental Protection Agency, Office of Radiation & Indoor Air.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Radiation and Indoor Air. Technologically Enhanced Naturally Occurring Radioactive Materials in the Southwestern Copper Belt of Arizona. Washington, DC: U.S. Environmental Protection Agency, Office of Radiation & Indoor Air, 1999.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Radiation and Indoor Air. Technologically Enhanced Naturally Occurring Radioactive Materials in the Southwestern Copper Belt of Arizona. U.S. Environmental Protection Agency, Office of Radiation & Indoor Air, 1999.