Cita APA (7a ed.)

Pratt, J. W. (1967). América and world leadership: 1900-1921. Collier-Macmillan.

Cita Chicago Style (17a ed.)

Pratt, Julius W. América and World Leadership: 1900-1921. London: Collier-Macmillan, 1967.

Cita MLA (9a ed.)

Pratt, Julius W. América and World Leadership: 1900-1921. Collier-Macmillan, 1967.