Powers, Stephen. (1992ko uztaila). «The Battle of Normandy: The Lingering Controversy» The Journal of Military History 56 (3): 455–472. doi:10.2307/1985972. ISSN0899-3718..
worldcat.org
Powers, Stephen. (1992ko uztaila). «The Battle of Normandy: The Lingering Controversy» The Journal of Military History 56 (3): 455–472. doi:10.2307/1985972. ISSN0899-3718..