Cita APA (7th ed.)

Ovenden, M. (1962). Life in the universe: A scientific discussion. Anchor Books.

Cita Chicago (17th ed.)

Ovenden, M.W. Life in the Universe: A Scientific Discussion. Garden City, New York: Anchor Books, 1962.

Cita MLA (9th ed.)

Ovenden, M.W. Life in the Universe: A Scientific Discussion. Anchor Books, 1962.