Delta Air Lines System Timetable April 28, 1985
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable April 28, 1985." Delta Flight Museum. 1985-04-28, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19850428.
APA
Delta Air Lines, Inc. (1985-04-28). Delta Air Lines System Timetable April 28, 1985. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19850428
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable April 28, 1985." 1985-04-28. May 6, 2026. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19850428.
