Delta Air Lines System Timetable December 15, 1985
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable December 15, 1985." Delta Flight Museum. 1985-12-15, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19851215.
APA
Delta Air Lines, Inc. (1985-12-15). Delta Air Lines System Timetable December 15, 1985. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19851215
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable December 15, 1985." 1985-12-15. July 23, 2025. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19851215.