APA

Transportation Research Record nr 631, . (1977). Geometrics, water treatment, utility practices, safety appurtenances, and outdoor advertisement. Washington DC: Transportation Research Record nr 631.

Chicago

Transportation Research Record nr 631, . 1977. Geometrics, water treatment, utility practices, safety appurtenances, and outdoor advertisement. Washington DC: Transportation Research Record nr 631.

Harvard

Transportation Research Record nr 631, . (1977). Geometrics, water treatment, utility practices, safety appurtenances, and outdoor advertisement. Washington DC: Transportation Research Record nr 631.

MLA

Transportation Research Record nr 631, . Geometrics, water treatment, utility practices, safety appurtenances, and outdoor advertisement. Washington DC: Transportation Research Record nr 631. 1977.