Scraper at work on a cable incline, April 21, 1903

Chicago citation style
Scraper at work on a cable incline, April 21, 1903. 1903. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/636. (Accessed June 21, 2018.)
APA citation style
(1903) Scraper at work on a cable incline, April 21, 1903. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/636
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/636>.
Note: These citations are programmatically generated and may be incomplete.