Low air fares [effective September 23, 1934]
MLA
Delta Air Lines, Inc.. "Low air fares [effective September 23, 1934]." Delta Flight Museum. 1934-09-23, https://dlg.galileo.usg.edu/do:delta_dal-eal-tt_dal-eal-tt-19340923.
APA
Delta Air Lines, Inc. (1934-09-23). Low air fares [effective September 23, 1934]. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-eal-tt_dal-eal-tt-19340923
Chicago
Delta Air Lines, Inc.. "Low air fares [effective September 23, 1934]." 1934-09-23. October 21, 2026. https://dlg.galileo.usg.edu/do:delta_dal-eal-tt_dal-eal-tt-19340923.
