APA

Pethybridge R., . (1962). A key to Soviet politics. New York: Frederick A . praeger Publisher.

Chicago

Pethybridge Roger, . 1962. A key to Soviet politics. New York: Frederick A . praeger Publisher.

Harvard

Pethybridge R., . (1962). A key to Soviet politics. New York: Frederick A . praeger Publisher.

MLA

Pethybridge Roger, . A key to Soviet politics. New York: Frederick A . praeger Publisher. 1962.