Depue, L. (2003). Safety management systems: A synthesis of highway practice. Transportation Research Board, National Research Council.
Chicago-referens (17:e uppl.)Depue, Leanna. Safety Management Systems: A Synthesis of Highway Practice. Washington, D.C: Transportation Research Board, National Research Council, 2003.
MLA-referens (9:e uppl.)Depue, Leanna. Safety Management Systems: A Synthesis of Highway Practice. Transportation Research Board, National Research Council, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.