APA
Environment Council, . (1994). Directory of environmental courses 1994-1996: a guide to academic, professional and vocational courses related to the environment. London: Environment Council.
Chicago
Environment Council, . 1994. Directory of environmental courses 1994-1996: a guide to academic, professional and vocational courses related to the environment. London: Environment Council.
Harvard
Environment Council, . (1994). Directory of environmental courses 1994-1996: a guide to academic, professional and vocational courses related to the environment. London: Environment Council.
MLA
Environment Council, . Directory of environmental courses 1994-1996: a guide to academic, professional and vocational courses related to the environment. London: Environment Council. 1994.
