APA

Pratt J. W., . (1967). Challenge and rejections: the United States and world leadership, 1900-1921. New York: Macmillan.

Chicago

Pratt Julius William, . 1967. Challenge and rejections: the United States and world leadership, 1900-1921. New York: Macmillan.

Harvard

Pratt J. W., . (1967). Challenge and rejections: the United States and world leadership, 1900-1921. New York: Macmillan.

MLA

Pratt Julius William, . Challenge and rejections: the United States and world leadership, 1900-1921. New York: Macmillan. 1967.