APA

Bemis S. F., . (1955). The United States as a world power. New York: Holt.

Chicago

Bemis Samuel Flagg, . 1955. The United States as a world power. New York: Holt.

Harvard

Bemis S. F., . (1955). The United States as a world power. New York: Holt.

MLA

Bemis Samuel Flagg, . The United States as a world power. New York: Holt. 1955.