The two Germanys.
MLA
Dornberg, John., et al. The two Germanys. New York : The Dial Press, [1974]
APA
Dornberg, J., Tehon, A., Korn, B. & Atha Tehon Thiras Collection (University of Pennsylvania). (1974). The two Germanys. New York : The Dial Press.
Chicago
Dornberg, John., Atha. Tehon, Bob. Korn and Atha Tehon Thiras Collection (University of Pennsylvania). The two Germanys. New York : The Dial Press, [1974]