"Detail of transfer point or hub on conveyor belt system."

Chicago citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988. "Detail of transfer point or hub on conveyor belt system.". 1935-09. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/294110. (Accessed June 23, 2018.)
APA citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988, (1935-09) "Detail of transfer point or hub on conveyor belt system.". Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/294110
MLA citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/294110>.
Note: These citations are programmatically generated and may be incomplete.