APA

Dulles F. R., . (1966). The imperial years. New York: Y. Crowell.

Chicago

Dulles Foster Rhea, . 1966. The imperial years. New York: Y. Crowell.

Harvard

Dulles F. R., . (1966). The imperial years. New York: Y. Crowell.

MLA

Dulles Foster Rhea, . The imperial years. New York: Y. Crowell. 1966.