Northwest Airlines Annual Report 1947
MLA
Northwest Airlines. "Northwest Airlines Annual Report 1947." Delta Flight Museum. 1948-03-15, https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1947.
APA
Northwest Airlines (1948-03-15). Northwest Airlines Annual Report 1947. Retrieved from https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1947
Chicago
Northwest Airlines. "Northwest Airlines Annual Report 1947." 1948-03-15. June 2, 2026. https://dlg.galileo.usg.edu/do:delta_nwa-ar_nwa-ar-1947.
