APA
(1968). The Soviet Union : a half-century of communism. Baltimore ; Maryland: Johns Hopkins Press.
Chicago
1968. The Soviet Union : a half-century of communism. Baltimore ; Maryland: Johns Hopkins Press.
Harvard
(1968). The Soviet Union : a half-century of communism. Baltimore ; Maryland: Johns Hopkins Press.
MLA
The Soviet Union : a half-century of communism. Baltimore ; Maryland: Johns Hopkins Press. 1968.
