Cita APA (7a ed.)

Young, J. W. (1997). Britain and the world in the twentieth century. Arnold.

Cita Chicago Style (17a ed.)

Young, John W. Britain and the World in the Twentieth Century. London: Arnold, 1997.

Cita MLA (9a ed.)

Young, John W. Britain and the World in the Twentieth Century. Arnold, 1997.