Northwest Airlines Flight Schedule 1947 April 27
MLA
Northwest Airlines. "Northwest Airlines Flight Schedule 1947 April 27." Delta Flight Museum. 1947-04-27, https://dlg.galileo.usg.edu/do:delta_nwa-tt_nwa-tt-19470427.
APA
Northwest Airlines (1947-04-27). Northwest Airlines Flight Schedule 1947 April 27. Retrieved from https://dlg.galileo.usg.edu/do:delta_nwa-tt_nwa-tt-19470427
Chicago
Northwest Airlines. "Northwest Airlines Flight Schedule 1947 April 27." 1947-04-27. October 10, 2026. https://dlg.galileo.usg.edu/do:delta_nwa-tt_nwa-tt-19470427.
