Texas Transportation Institute & United States. Office of the Assistant Secretary for Environment and Urban Systems. (1972). Urban corridor demonstration program evaluation manual. Dept. of Transportation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Texas Transportation Institute και United States. Office of the Assistant Secretary for Environment and Urban Systems. Urban Corridor Demonstration Program Evaluation Manual. Washington, D.C.: Dept. of Transportation, 1972.
Παραπομπή σε μορφή MLA (8th εκδ.)Texas Transportation Institute και United States. Office of the Assistant Secretary for Environment and Urban Systems. Urban Corridor Demonstration Program Evaluation Manual. Dept. of Transportation, 1972.
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