Manual of uniform traffic control devices for streets and highways, April 1937.
APA Citation
Oklahoma. State Highway Commission. Division of Traffic Control. (1937). Manual of uniform traffic control devices for streets and highways, April 1937. Oklahoma: Oklahoma State Highway Commission.
MLA Citation
Oklahoma. State Highway Commission. Division of Traffic Control. Manual of Uniform Traffic Control Devices for Streets And Highways, April 1937. Oklahoma: Oklahoma State Highway Commission, 1937.
Warning: These citations may not always be complete (especially for serials).