Παραπομπή σε μορφή APA (7η εκδ.)

Cunard, R. A. (1990). Maintenance management of street and highway signs. Transportation Research Board, National Research Council.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cunard, Richard A. Maintenance Management of Street and Highway Signs. Washington, D.C: Transportation Research Board, National Research Council, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cunard, Richard A. Maintenance Management of Street and Highway Signs. Transportation Research Board, National Research Council, 1990.