United States. National Transportation Safety Board. (1992). United Airlines Flight 585, Boeing 737-291, N999UA uncontrolled collision with terrain for undetermined reasons 4 miles south of Colorado Springs Municipal Airport, Colorado Springs, Colorado [March 3, 1991]. The Board.
Chicago Style (17th ed.) CitationUnited States. National Transportation Safety Board. United Airlines Flight 585, Boeing 737-291, N999UA Uncontrolled Collision with Terrain for Undetermined Reasons 4 Miles South of Colorado Springs Municipal Airport, Colorado Springs, Colorado [March 3, 1991]. Washington, D.C.: The Board, 1992.
MLA (9th ed.) CitationUnited States. National Transportation Safety Board. United Airlines Flight 585, Boeing 737-291, N999UA Uncontrolled Collision with Terrain for Undetermined Reasons 4 Miles South of Colorado Springs Municipal Airport, Colorado Springs, Colorado [March 3, 1991]. The Board, 1992.