Polish Research Centre (Londyn). (1942). German failures in Poland: Natural obstacles to Nazi population policy. Polish Research Centre.
Chicago-Zitierstil (17. Ausg.)Polish Research Centre (Londyn). German Failures in Poland: Natural Obstacles to Nazi Population Policy. London: Polish Research Centre, 1942.
MLA-Zitierstil (9. Ausg.)Polish Research Centre (Londyn). German Failures in Poland: Natural Obstacles to Nazi Population Policy. Polish Research Centre, 1942.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.