Schaller, Michael (1976), "American Air Strategy in China, 1939–1941: The Origins of Clandestine Air Warfare", American Quarterly, 28 (1): 3–19, எண்ணிம ஆவணச் சுட்டி:10.2307/2712474, JSTOR2712474
Schaller, Michael (1976), "American Air Strategy in China, 1939–1941: The Origins of Clandestine Air Warfare", American Quarterly, 28 (1): 3–19, எண்ணிம ஆவணச் சுட்டி:10.2307/2712474, JSTOR2712474