Cita APA (7a ed.)

Bartlett, C. J. 1. a. (1989). British foreign policy in the twentieth century. Macmillan Education.

Cita Chicago Style (17a ed.)

Bartlett, C. J 1931- autor. British Foreign Policy in the Twentieth Century. Basingstoke: Macmillan Education, 1989.

Cita MLA (9a ed.)

Bartlett, C. J 1931- autor. British Foreign Policy in the Twentieth Century. Macmillan Education, 1989.