Information bulletin no. 1: change in schedule effective Jan. 20, 1930
MLA
Delta Air Service. "Information bulletin no. 1: change in schedule effective Jan. 20, 1930." Delta Flight Museum. 1930-01-20, https://dlg.galileo.usg.edu/do:delta_das_das-info-bulletin-001.
APA
Delta Air Service (1930-01-20). Information bulletin no. 1: change in schedule effective Jan. 20, 1930. Retrieved from https://dlg.galileo.usg.edu/do:delta_das_das-info-bulletin-001
Chicago
Delta Air Service. "Information bulletin no. 1: change in schedule effective Jan. 20, 1930." 1930-01-20. May 27, 2026. https://dlg.galileo.usg.edu/do:delta_das_das-info-bulletin-001.
