Libbey. Alexander P. de Seversky and the Quest for Air Power. University of Nebraska Press.
Citazione stile Chigago Style (17a edizione)Libbey. Alexander P. De Seversky and the Quest for Air Power. University of Nebraska Press.
Citatione MLA (9a ed.)Libbey. Alexander P. De Seversky and the Quest for Air Power. University of Nebraska Press.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.