Delta Air Lines System Timetable 1979 April 29
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1979 April 29." Delta Flight Museum. 1979-04-29, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19790429a.
APA
Delta Air Lines, Inc. (1979-04-29). Delta Air Lines System Timetable 1979 April 29. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19790429a
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1979 April 29." 1979-04-29. August 6, 2025. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19790429a.
