Labor and industry.

Chicago citation style
Labor and industry.. Retrieved from the Digital Public Library of America, https://archive.org/details/laborindustry01unse. (Accessed December 19, 2018.)
APA citation style
Labor and industry.. Retrieved from the Digital Public Library of America, https://archive.org/details/laborindustry01unse
MLA citation style
Retrieved from the Digital Public Library of America <https://archive.org/details/laborindustry01unse>.
Note: These citations are programmatically generated and may be incomplete.