Tham khảo Khmer Tự do

  1. ↑ Library of Congress Country Studies: Cambodia - The Second Indochina War, 1954-75, 1987
  2. ↑ Norodom Sihanouk, Hồi ký Sihanouk, Nhà xuất bản Công An Nhân dân, 2005, trang 500
  3. ↑ Short, P. Pol Pot: Anatomy of a Nightmare, Henry Holt, 2005, p.156
  4. ↑ Blum, W. Killing Hope: US military and CIA interventions since World War II, Zed, 2003, p.125
  5. ↑ Radu, M. The New Insurgencies, Transaction Publishers, 1990, p.202
  6. ↑ Shawcross, W. Sideshow: Kissinger, Nixon and the Destruction of Cambodia, 1979, p.132
  7. ↑ Kershaw, R. Monarchy in South-East Asia: the faces of tradition in transition, Routledge, 2001, p.221