Cita APA (7th ed.)

Ward, B., & Dubos, R. (1972). Only one earth : the care and maintenance of a small planet: The care and maintenance of a small planet. Andre Deutsch.

Cita Chicago (17th ed.)

Ward, Barbara, i Rene Dubos. Only One Earth : The Care and Maintenance of a Small Planet: The Care and Maintenance of a Small Planet. London: Andre Deutsch, 1972.

Cita MLA (9th ed.)

Ward, Barbara, i Rene Dubos. Only One Earth : The Care and Maintenance of a Small Planet: The Care and Maintenance of a Small Planet. Andre Deutsch, 1972.