Delta Air Lines annual report 1959
MLA
Delta Air Lines, Inc.. "Delta Air Lines annual report 1959." Delta Flight Museum. 1959-08, https://dlg.galileo.usg.edu/do:delta_dal-ar_dal-ar-1959.
APA
Delta Air Lines, Inc. (1959-08). Delta Air Lines annual report 1959. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-ar_dal-ar-1959
Chicago
Delta Air Lines, Inc.. "Delta Air Lines annual report 1959." 1959-08. January 28, 2026. https://dlg.galileo.usg.edu/do:delta_dal-ar_dal-ar-1959.
