APA (7th ed.) Citation

United States. National Transportation Safety Board. (1999). Northern Indiana Commuter Transportation District railroad safety assessment. National Transportation Safety Board.

Chicago Style (17th ed.) Citation

United States. National Transportation Safety Board. Northern Indiana Commuter Transportation District Railroad Safety Assessment. Washington, D.C.: National Transportation Safety Board, 1999.

MLA (9th ed.) Citation

United States. National Transportation Safety Board. Northern Indiana Commuter Transportation District Railroad Safety Assessment. National Transportation Safety Board, 1999.