United States. Federal Transit Administration, Transit Cooperative Research Program, National Research Council (U.S.). Transportation Research Board, Vlasak, D. L., & Williams, J. (2006). Synthesis of information related to transit problems. Transportation Research Board, National Research Council.
Παραπομπή σε μορφή Chicago (17η εκδ.)United States. Federal Transit Administration, Transit Cooperative Research Program, National Research Council (U.S.). Transportation Research Board, Donna L. Vlasak, και Jon Williams. Synthesis of Information Related to Transit Problems. [Washington, D.C.]: Transportation Research Board, National Research Council, 2006.
Παραπομπή σε μορφή MLA (9th εκδ.)United States. Federal Transit Administration, et al. Synthesis of Information Related to Transit Problems. Transportation Research Board, National Research Council, 2006.