Concrete being poured from a clamshell bucket into caisson for the Tacoma Narrows Bridge, ca. 1939

Chicago citation style
Seattle Post Intelligencer. Concrete being poured from a clamshell bucket into caisson for the Tacoma Narrows Bridge, ca. 1939. ca. 1939. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/138. (Accessed October 22, 2018.)
APA citation style
Seattle Post Intelligencer, (ca. 1939) Concrete being poured from a clamshell bucket into caisson for the Tacoma Narrows Bridge, ca. 1939. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/138
MLA citation style
Seattle Post Intelligencer. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/138>.
Note: These citations are programmatically generated and may be incomplete.