Road map of Irion County, Texas / reduced by State Highway Department from map furnished by Irion County.
MLA
Dept, Texas. Highway. Road Map of Irion County, Texas / Reduced by State Highway Department from Map Furnished by Irion County. State Highway Dept.?], 0AD. https://collections.library.yale.edu/catalog/15827484.
APA, 6th edition
Dept, T. H. (0 C.E.). Road map of Irion County, Texas / reduced by State Highway Department from map furnished by Irion County. [Maps]. State Highway Dept.?], https://collections.library.yale.edu/catalog/15827484.