Delta Air Lines Annual Reports
MLA
Delta Air Corporation. "Delta Air Lines Annual Reports." Delta Flight Museum. 1939/2004, https://dlg.usg.edu/collection/delta_dal-ar.
APA
Delta Air Corporation (1939/2004). Delta Air Lines Annual Reports. Retrieved from https://dlg.usg.edu/collection/delta_dal-ar
Chicago
Delta Air Corporation. "Delta Air Lines Annual Reports." 1939/2004. June 1, 2026. https://dlg.usg.edu/collection/delta_dal-ar.
