Visitors to Diablo Dam standing on walkway running along the top of the dam, March 6, 1931

Chicago citation style
Visitors to Diablo Dam standing on walkway running along the top of the dam, March 6, 1931. 1931. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/272. (Accessed June 18, 2018.)
APA citation style
(1931) Visitors to Diablo Dam standing on walkway running along the top of the dam, March 6, 1931. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/272
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/272>.
Note: These citations are programmatically generated and may be incomplete.