APA

Kaufman E., . (19771976). The superpowers and their spheres of influence: the United States and the Soviet Union in Eastern Europe and Latin America. New York: St. Martin's Press.

Chicago

Kaufman Edy, . 19771976. The superpowers and their spheres of influence: the United States and the Soviet Union in Eastern Europe and Latin America. New York: St. Martin's Press.

Harvard

Kaufman E., . (19771976). The superpowers and their spheres of influence: the United States and the Soviet Union in Eastern Europe and Latin America. New York: St. Martin's Press.

MLA

Kaufman Edy, . The superpowers and their spheres of influence: the United States and the Soviet Union in Eastern Europe and Latin America. New York: St. Martin's Press. 19771976.