APA

Heer N. W., . (1971). Politics and History in the Soviet Union. Cambridge: .

Chicago

Heer Nancy W, . 1971. Politics and History in the Soviet Union. Cambridge: .

Harvard

Heer N. W., . (1971). Politics and History in the Soviet Union. Cambridge: .

MLA

Heer Nancy W, . Politics and History in the Soviet Union. Cambridge: . 1971.