Fly for business and why [January 20, 1930]
MLA
Delta Air Service. "Fly for business and why [January 20, 1930]." Delta Flight Museum. 1930-01-20, https://dlg.galileo.usg.edu/do:delta_das_das-brochure-fly-19300120.
APA
Delta Air Service (1930-01-20). Fly for business and why [January 20, 1930]. Retrieved from https://dlg.galileo.usg.edu/do:delta_das_das-brochure-fly-19300120
Chicago
Delta Air Service. "Fly for business and why [January 20, 1930]." 1930-01-20. May 27, 2026. https://dlg.galileo.usg.edu/do:delta_das_das-brochure-fly-19300120.
