APA

Conference on the Long-Term Worldwide Biological Consequences of Nuclear War, Ehrlich P. R., Sagan C. & Orr Roberts. (19851984). The cold war and the dark. New York: Norton.

Chicago

Conference on the Long-Term Worldwide Biological Consequences of Nuclear War, Ehrlich Paul R, Sagan Carl and Orr Roberts. 19851984. The cold war and the dark. New York: Norton.

Harvard

Conference on the Long-Term Worldwide Biological Consequences of Nuclear War, Ehrlich P. R., Sagan C. and Orr Roberts. (19851984). The cold war and the dark. New York: Norton.

MLA

Conference on the Long-Term Worldwide Biological Consequences of Nuclear War, Ehrlich Paul R, Sagan Carl and Orr Roberts. The cold war and the dark. New York: Norton. 19851984.