APA

edited by Joy A. Palmer, . (2001). Fifty key thinkers on the environment. London: Routledge.

Chicago

edited by Joy A. Palmer, . 2001. Fifty key thinkers on the environment. London: Routledge.

Harvard

edited by Joy A. Palmer, . (2001). Fifty key thinkers on the environment. London: Routledge.

MLA

edited by Joy A. Palmer, . Fifty key thinkers on the environment. London: Routledge. 2001.