Early test drilling operations at the proposed site of Gorge Dam, October 17, 1919

Chicago citation style
Early test drilling operations at the proposed site of Gorge Dam, October 17, 1919. 1919. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/130. (Accessed October 23, 2018.)
APA citation style
(1919) Early test drilling operations at the proposed site of Gorge Dam, October 17, 1919. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/130
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ww-swps/id/130>.
Note: These citations are programmatically generated and may be incomplete.