Sawyer, Ralph, Соединённые штаты

• Journal of Military and Strategic Studies Том 21 № 2 - Articles
  Intelligence Acquisition in Early China
  Аннотация  pdf (English)
• Journal of Military and Strategic Studies Том 15 № 4 (2014) - Articles
  Clandestine Communication in Historic China
  Аннотация  PDF (English)