The informational load of highway guide signs.
APA Citation
Gordon, D. A., United States. Federal Highway Administration. (1981). The informational load of highway guide signs. Washington: Federal Highway Administration Offices of Research & Development Traffic Systems Division.
MLA Citation
Gordon, Donald A, and United States. Federal Highway Administration. The Informational Load of Highway Guide Signs. Washington: Federal Highway Administration Offices of Research & Development Traffic Systems Division, 1981.
Warning: These citations may not always be complete (especially for serials).