Delta Air Lines System Timetable 1973 October 28
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1973 October 28." Delta Flight Museum. 1973-10-28, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19731028.
APA
Delta Air Lines, Inc. (1973-10-28). Delta Air Lines System Timetable 1973 October 28. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19731028
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1973 October 28." 1973-10-28. May 1, 2026. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19731028.
