Delta Air Lines annual report 1975
MLA
Delta Air Lines, Inc.. "Delta Air Lines annual report 1975." Delta Flight Museum. 1975-08, https://dlg.galileo.usg.edu/do:delta_dal-ar_dal-ar-1975.
APA
Delta Air Lines, Inc. (1975-08). Delta Air Lines annual report 1975. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-ar_dal-ar-1975
Chicago
Delta Air Lines, Inc.. "Delta Air Lines annual report 1975." 1975-08. February 13, 2026. https://dlg.galileo.usg.edu/do:delta_dal-ar_dal-ar-1975.
