APA (7th ed.) Citation

Imperial War Museum <London> & Imperial War Museum. (1991). The Relief of Belsen, April 1945: Eyewitness accounts. Imperial War Museum.

Chicago Style (17th ed.) Citation

Imperial War Museum <London> and Imperial War Museum. The Relief of Belsen, April 1945: Eyewitness Accounts. London: Imperial War Museum, 1991.

MLA (8th ed.) Citation

Imperial War Museum <London> and Imperial War Museum. The Relief of Belsen, April 1945: Eyewitness Accounts. Imperial War Museum, 1991.