Cita APA (7a ed.)

Geiger, T. (1988). The future of the international system: The United States and the world. Unwin Hyman.

Cita Chicago Style (17a ed.)

Geiger, Theodore. The Future of the International System: The United States and the World. Boston: Unwin Hyman, 1988.

Cita MLA (9a ed.)

Geiger, Theodore. The Future of the International System: The United States and the World. Unwin Hyman, 1988.