Reinforced steel cable pipe frame in trench, ca. 1928-1930

Chicago citation style
Unknown. Reinforced steel cable pipe frame in trench, ca. 1928-1930. ca. 1928-1930. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/imlsmohai/id/4432. (Accessed October 19, 2018.)
APA citation style
Unknown, (ca. 1928-1930) Reinforced steel cable pipe frame in trench, ca. 1928-1930. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/imlsmohai/id/4432
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/imlsmohai/id/4432>.
Note: These citations are programmatically generated and may be incomplete.