First tweet of WSDOT reporting the slide

Chicago citation style
Washington State Department of Transportation. First tweet of WSDOT reporting the slide. 2014-03-22. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/p16786coll7/id/0. (Accessed September 22, 2018.)
APA citation style
Washington State Department of Transportation, (2014-03-22) First tweet of WSDOT reporting the slide. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/p16786coll7/id/0
MLA citation style
Washington State Department of Transportation. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/p16786coll7/id/0>.
Note: These citations are programmatically generated and may be incomplete.