Power generating units 1 and 2 under construction at Gorge Dam Powerhouse, as seen from the west, with penstock tunnel portals in background, January 12, 1923

Chicago citation style
Power generating units 1 and 2 under construction at Gorge Dam Powerhouse, as seen from the west, with penstock tunnel portals in background, January 12, 1923. 1923. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/192. (Accessed June 20, 2018.)
APA citation style
(1923) Power generating units 1 and 2 under construction at Gorge Dam Powerhouse, as seen from the west, with penstock tunnel portals in background, January 12, 1923. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/192
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/192>.
Note: These citations are programmatically generated and may be incomplete.