Tools used in coal-mining

Chicago citation style
Richard Nicol. Tools used in coal-mining. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/kccollects/id/350. (Accessed September 21, 2018.)
APA citation style
Richard Nicol, Tools used in coal-mining. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/kccollects/id/350
MLA citation style
Richard Nicol. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/kccollects/id/350>.
Note: These citations are programmatically generated and may be incomplete.