Mining operation

Chicago citation style
Mining operation. [19--]. Retrieved from the Digital Public Library of America, http://catalog.library.ca.gov/F/?func=find-b&request=001407034&find_code=SYS. (Accessed December 12, 2018.)
APA citation style
([19--]) Mining operation. Retrieved from the Digital Public Library of America, http://catalog.library.ca.gov/F/?func=find-b&request=001407034&find_code=SYS
MLA citation style
Retrieved from the Digital Public Library of America <http://catalog.library.ca.gov/F/?func=find-b&request=001407034&find_code=SYS>.
Note: These citations are programmatically generated and may be incomplete.