APA-Zitierstil (7. Ausg.)

Gram, H. W. (2003). Shot down over Denmark: 1940 - 1945 ; allied airmen put their lives at risk for our freedom (1. ed., 1. issue in Engl.). Danish Resistance Museum.

Chicago-Zitierstil (17. Ausg.)

Gram, Helge William. Shot Down over Denmark: 1940 - 1945 ; Allied Airmen Put Their Lives at Risk for Our Freedom. 1. ed., 1. issue in Engl. Copenhagen: Danish Resistance Museum, 2003.

MLA-Zitierstil (9. Ausg.)

Gram, Helge William. Shot Down over Denmark: 1940 - 1945 ; Allied Airmen Put Their Lives at Risk for Our Freedom. 1. ed., 1. issue in Engl. Danish Resistance Museum, 2003.