Code of federal regulations. Title 30, Mineral resources.
MLA
United States. Code of federal regulations. Title 30, Mineral resources. Washington, D.C. : National Archives and Records Administration
APA
United States. (1990). Code of federal regulations. Title 30, Mineral resources. Washington, D.C. : National Archives and Records Administration.
Chicago
United States. Code of federal regulations. Title 30, Mineral resources. Washington, D.C. : National Archives and Records Administration