Cunard, R. A. (1990). Maintenance management of street and highway signs. Transportation Research Board, National Research Council.
Citação do estilo Chicago (17ª ed.)Cunard, Richard A. Maintenance Management of Street and Highway Signs. Washington, D.C: Transportation Research Board, National Research Council, 1990.
Citação MLA (9ª ed.)Cunard, Richard A. Maintenance Management of Street and Highway Signs. Transportation Research Board, National Research Council, 1990.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.