APA
United Nations Environment Programme I. a. E. P. A. C., United Nations Environment Programme I. a. E. P. A. C., . (1997). Reducing greenhouse gas emissions. New York: United Nations.
Chicago
United Nations Environment Programme Industry and Environment Programme Acitivity Centre, United Nations Environment Programme Industry and Environment Programme Acitivity Centre, . 1997. Reducing greenhouse gas emissions. New York: United Nations.
Harvard
United Nations Environment Programme I. a. E. P. A. C., United Nations Environment Programme I. a. E. P. A. C., . (1997). Reducing greenhouse gas emissions. New York: United Nations.
MLA
United Nations Environment Programme Industry and Environment Programme Acitivity Centre, United Nations Environment Programme Industry and Environment Programme Acitivity Centre, . Reducing greenhouse gas emissions. New York: United Nations. 1997.
