Delta Air Lines System Timetable 1947 September 9
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1947 September 9." Delta Flight Museum. 1947-09-09, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19470909.
APA
Delta Air Lines, Inc. (1947-09-09). Delta Air Lines System Timetable 1947 September 9. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19470909
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1947 September 9." 1947-09-09. August 30, 2025. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19470909.
