APA (7th ed.) Citation

Allen, J. (1991). Biosphere: The human experiment. Penguin Books.

Chicago Style (17th ed.) Citation

Allen, John. Biosphere: The Human Experiment. New York, N. Y: Penguin Books, 1991.

MLA (9th ed.) Citation

Allen, John. Biosphere: The Human Experiment. Penguin Books, 1991.