APA

Harrison P., . (1992). The third revolution : enviroment, population and sustainable world. New York: Penguin Books.

Chicago

Harrison Paul, . 1992. The third revolution : enviroment, population and sustainable world. New York: Penguin Books.

Harvard

Harrison P., . (1992). The third revolution : enviroment, population and sustainable world. New York: Penguin Books.

MLA

Harrison Paul, . The third revolution : enviroment, population and sustainable world. New York: Penguin Books. 1992.