APA stil citiranja

Ward, B. (1972). Only one Earth: Only one Earth : the care and maintenance of a small planet. New York: W. W. Norton.

Chicago stil citiranja

Ward, Barbara. Only one Earth: Only one Earth : the care and maintenance of a small planet. New York: W. W. Norton, 1972.

MLA stil citiranja

Ward, Barbara. Only one Earth: Only one Earth : the care and maintenance of a small planet. New York: W. W. Norton, 1972.