Style de citation APA (7e éd.)

National Research Council (U.S.). Highway Research Board. (1953). Experiments in extension programs: Presented at the Thrity-second Annual Meeting, January 13-16, 1953. Highway Research Board.

Style de citation Chicago (17e éd.)

National Research Council (U.S.). Highway Research Board. Experiments in Extension Programs: Presented at the Thrity-second Annual Meeting, January 13-16, 1953. Washington, D.C: Highway Research Board, 1953.

Style de citation MLA (9e éd.)

National Research Council (U.S.). Highway Research Board. Experiments in Extension Programs: Presented at the Thrity-second Annual Meeting, January 13-16, 1953. Highway Research Board, 1953.