Looking down main pressure tunnel from tunnel entrance, November 3, 1924

Chicago citation style
Looking down main pressure tunnel from tunnel entrance, November 3, 1924. 1924. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/391. (Accessed October 20, 2018.)
APA citation style
(1924) Looking down main pressure tunnel from tunnel entrance, November 3, 1924. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/391
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/391>.
Note: These citations are programmatically generated and may be incomplete.