Constructing a circular penstock forebay at the western end of the main tunnel, June 15, 1911

Chicago citation style
Constructing a circular penstock forebay at the western end of the main tunnel, June 15, 1911. 1911. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/611. (Accessed June 18, 2018.)
APA citation style
(1911) Constructing a circular penstock forebay at the western end of the main tunnel, June 15, 1911. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/611
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/611>.
Note: These citations are programmatically generated and may be incomplete.