Παραπομπή σε μορφή APA (7η εκδ.)

Board, N. R. C. T. R. (1987). Private sector involvement and toll road financing in the provision of highways. Washington, DC : Transportation Research Board.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Board, National Research Council. Transportation Research. Private Sector Involvement and Toll Road Financing in the Provision of Highways. Washington, DC : Transportation Research Board, 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Board, National Research Council. Transportation Research. Private Sector Involvement and Toll Road Financing in the Provision of Highways. Washington, DC : Transportation Research Board, 1987.