Chú thích Trận_sông_Lys_(1918)

  1. ↑ Spencer Tucker, Priscilla Mary Roberts, World War I: A Student Encyclopedia, trang 479
  2. 1 2 3 4 5 6 7 8 9 Lawrence Sondhaus, World War One: The Global Revolution, trang 411
  3. 1 2 3 Spencer C. Tucker, A Global Chronology of Conflict: From the Ancient World to the Modern Middle East, trang 1663
  4. ↑ Spencer Tucker, Priscilla Mary Roberts, World War I: A Student Encyclopedia, các trang 152-154.
  5. 1 2 3 4 5 William R. Griffiths, Thomas E. Griess, The Great War, các trang 141-142.
  6. 1 2 3 4 5 6 Spencer Tucker, Priscilla Mary Roberts, World War I: A Student Encyclopedia, trang 1154
  7. 1 2 3 4 5 6 7 8 David Stevenson, With Our Backs to the Wall: Victory and Defeat in 1918, các trang 68-72.
  8. ↑ Spencer Tucker, Priscilla Mary Roberts, World War I: A Student Encyclopedia, trang 12
  9. 1 2 3 4 5 Geoffrey Parker, The Cambridge history of warfare, trang 305
  10. 1 2 3 4 David F. Burg, L. Edward Purcell, Almanac of World War I, các trang 204.
  11. ↑ David McCullough, Truman, trang 110

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