Παραπομπή σε μορφή APA (7η εκδ.)

Ward, B., & Dubos, R. J. (1972). Only one earth: The care and maintenance of a small planet (First edition.). Norton & Company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ward, Barbara, και René J. Dubos. Only One Earth: The Care and Maintenance of a Small Planet. First edition. New York: Norton & Company, 1972.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ward, Barbara, και René J. Dubos. Only One Earth: The Care and Maintenance of a Small Planet. First edition. Norton & Company, 1972.