Northwest Airlines Annual Report 1972
MLA
Northwest Airlines. "Northwest Airlines Annual Report 1972." Delta Flight Museum. 1973-03-15, https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1972.
APA
Northwest Airlines (1973-03-15). Northwest Airlines Annual Report 1972. Retrieved from https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1972
Chicago
Northwest Airlines. "Northwest Airlines Annual Report 1972." 1973-03-15. June 1, 2026. https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1972.
