Northwest Airlines Annual Report 1979
MLA
Northwest Airlines. "Northwest Airlines Annual Report 1979." Delta Flight Museum. 1980-03-15, https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1979.
APA
Northwest Airlines (1980-03-15). Northwest Airlines Annual Report 1979. Retrieved from https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1979
Chicago
Northwest Airlines. "Northwest Airlines Annual Report 1979." 1980-03-15. June 2, 2026. https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1979.
