Gatun locks at work, Panama Canal

Chicago citation style
Gatun locks at work, Panama Canal. 1879-1930. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/sq87dp10g. (Accessed June 22, 2018.)
APA citation style
(1879-1930) Gatun locks at work, Panama Canal. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/sq87dp10g
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/sq87dp10g>.
Note: These citations are programmatically generated and may be incomplete.