Nine years' operation of the Baltimore sewage-works /

Chicago citation style
Schaetzle, Theodore C. Nine years' operation of the Baltimore sewage-works /. 1921?]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102289516. (Accessed December 10, 2018.)
APA citation style
Schaetzle, Theodore C, (1921?]) Nine years' operation of the Baltimore sewage-works /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102289516
MLA citation style
Schaetzle, Theodore C. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/102289516>.
Note: These citations are programmatically generated and may be incomplete.