1977 Indiana state highway system

Chicago citation style
Indiana. State Highway Commission. 1977 Indiana state highway system. 1977. Retrieved from the Digital Public Library of America, http://cdm16066.contentdm.oclc.org/cdm/ref/collection/p15078coll8/id/1139. (Accessed July 19, 2018.)
APA citation style
Indiana. State Highway Commission, (1977) 1977 Indiana state highway system. Retrieved from the Digital Public Library of America, http://cdm16066.contentdm.oclc.org/cdm/ref/collection/p15078coll8/id/1139
MLA citation style
Indiana. State Highway Commission. Retrieved from the Digital Public Library of America <http://cdm16066.contentdm.oclc.org/cdm/ref/collection/p15078coll8/id/1139>.
Note: These citations are programmatically generated and may be incomplete.