Delta Air Lines System Timetable April 1, 1983
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable April 1, 1983." Delta Flight Museum. 1983-04-01, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19830401.
APA
Delta Air Lines, Inc. (1983-04-01). Delta Air Lines System Timetable April 1, 1983. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19830401
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable April 1, 1983." 1983-04-01. May 6, 2026. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19830401.
