Citazione Stile APA (7a Edizione)

National Research Council (U.S.). Highway Research Board. (1957). Manpower potentials in highway engineering: Presented at the Thirty-sixth Annual Meeting, January 7-11, 1957. Highway Research Board.

Citazione stile Chigago Style (17a edizione)

National Research Council (U.S.). Highway Research Board. Manpower Potentials in Highway Engineering: Presented at the Thirty-sixth Annual Meeting, January 7-11, 1957. Washington: Highway Research Board, 1957.

Citatione MLA (9a ed.)

National Research Council (U.S.). Highway Research Board. Manpower Potentials in Highway Engineering: Presented at the Thirty-sixth Annual Meeting, January 7-11, 1957. Highway Research Board, 1957.