Cita APA (7a ed.)

Calder, N. (1968). Unless Peace Comes: A Scientific Forecast of New Weapons. Penguin books.

Cita Chicago Style (17a ed.)

Calder, Nigel. Unless Peace Comes: A Scientific Forecast of New Weapons. England: Penguin books, 1968.

Cita MLA (8a ed.)

Calder, Nigel. Unless Peace Comes: A Scientific Forecast of New Weapons. Penguin books, 1968.