(1980). Hercules Mining Company, Day Mines Group, personnel records: Names extracted from employment cards 1918-1927. s.n..
Style de citation Chicago (17e éd.)Hercules Mining Company, Day Mines Group, Personnel Records: Names Extracted from Employment Cards 1918-1927. [S.l..: s.n., 1980.
Style de citation MLA (8e éd.)Hercules Mining Company, Day Mines Group, Personnel Records: Names Extracted from Employment Cards 1918-1927. s.n., 1980.
Attention : ces citations peuvent ne pas être correctes à 100%.