Delta Air Lines System Timetable 1957 October 27
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1957 October 27." Delta Flight Museum. 1957-10-27, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19571027.
APA
Delta Air Lines, Inc. (1957-10-27). Delta Air Lines System Timetable 1957 October 27. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19571027
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1957 October 27." 1957-10-27. August 19, 2025. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19571027.
