Michael Schaller. American Air Strategy in China, 1939–1941: The Origins of Clandestine Air Warfare. „American Quarterly”. 28 (1), s. 3–19, 1976. DOI: 10.2307/2712474. JSTOR: 2712474.
Michael Schaller. American Air Strategy in China, 1939–1941: The Origins of Clandestine Air Warfare. „American Quarterly”. 28 (1), s. 3–19, 1976. DOI: 10.2307/2712474. JSTOR: 2712474.