Cita APA (7a ed.)

Beer, F. A. (1981). Peace against war: The ecology of international violence. Freeman.

Cita Chicago Style (17a ed.)

Beer, Francis A. Peace Against War: The Ecology of International Violence. San Francisco: Freeman, 1981.

Cita MLA (8a ed.)

Beer, Francis A. Peace Against War: The Ecology of International Violence. Freeman, 1981.