Delta Air Lines System Timetable September 1, 1985
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable September 1, 1985." Delta Flight Museum. 1985-09-01, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19850901.
APA
Delta Air Lines, Inc. (1985-09-01). Delta Air Lines System Timetable September 1, 1985. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19850901
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable September 1, 1985." 1985-09-01. July 31, 2025. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19850901.
