Huber, Thomas M. Japan's Battle of Okinawa, April–June 1945. Leavenworth Papers. United States Army Command and General Staff College. May 1990 [2008-05-09]. (原始内容(mdy)存档于2009年12月30日).
history.army.mil
Appleman, Roy E. Okinawa: The Last Battle. United States Army in World War II. Washington DC: United States Army Center of Military History. 1948: 462 [2009-10-08]. (原始内容存档于2009-09-26).
Huber, Thomas M. Japan's Battle of Okinawa, April–June 1945. Leavenworth Papers. United States Army Command and General Staff College. May 1990 [2008-05-09]. (原始内容(mdy)存档于2009年12月30日).
Appleman, Roy E. Okinawa: The Last Battle. United States Army in World War II. Washington DC: United States Army Center of Military History. 1948: 462 [2009-10-08]. (原始内容存档于2009-09-26).