United States. Federal Transit Administration, Transit Cooperative Research Program, Transit Development Corporation, National Research Council (U.S.). Transportation Research Board, & Balog, J. N. (2005). Public transportation security. Transportation Research Board.
Cita Chicago (17th ed.)United States. Federal Transit Administration, Transit Cooperative Research Program, Transit Development Corporation, National Research Council (U.S.). Transportation Research Board, i John N. Balog. Public Transportation Security. Washington, D.C: Transportation Research Board, 2005.
Cita MLA (9th ed.)United States. Federal Transit Administration, et al. Public Transportation Security. Transportation Research Board, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.