United States. Federal Transit Administration, Transit Cooperative Research Program, Transit Development Corporation, National Research Council (U.S.). Transportation Research Board, & Balog, J. N. (2004). Public transportation security. Transportation Research Board.
Chicago-referens (17:e uppl.)United States. Federal Transit Administration, Transit Cooperative Research Program, Transit Development Corporation, National Research Council (U.S.). Transportation Research Board, och John N. Balog. Public Transportation Security. Washington, D.C: Transportation Research Board, 2004.
MLA-referens (9:e uppl.)United States. Federal Transit Administration, et al. Public Transportation Security. Transportation Research Board, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.