Calleo, D. P. (1978). The German problem reconsidered: Germany and the world order, 1870 to the present. Cambridge University Press.
Chicago-Zitierstil (17. Ausg.)Calleo, David P. The German Problem Reconsidered: Germany and the World Order, 1870 to the Present. Cambridge ; New York: Cambridge University Press, 1978.
MLA-Zitierstil (8. Ausg.)Calleo, David P. The German Problem Reconsidered: Germany and the World Order, 1870 to the Present. Cambridge University Press, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.