1988 Indiana state highway system

Chicago citation style
Indiana. Department of Highways. 1988 Indiana state highway system. 1988. Retrieved from the Digital Public Library of America, http://cdm16066.contentdm.oclc.org/cdm/ref/collection/p15078coll8/id/1112. (Accessed July 16, 2018.)
APA citation style
Indiana. Department of Highways, (1988) 1988 Indiana state highway system. Retrieved from the Digital Public Library of America, http://cdm16066.contentdm.oclc.org/cdm/ref/collection/p15078coll8/id/1112
MLA citation style
Indiana. Department of Highways. Retrieved from the Digital Public Library of America <http://cdm16066.contentdm.oclc.org/cdm/ref/collection/p15078coll8/id/1112>.
Note: These citations are programmatically generated and may be incomplete.