APA
Clarke R., . (1987). The greenhouse gases. Nairobi, Kenya: United Nations Environment Programme.
Chicago
Clarke Robin, . 1987. The greenhouse gases. Nairobi, Kenya: United Nations Environment Programme.
Harvard
Clarke R., . (1987). The greenhouse gases. Nairobi, Kenya: United Nations Environment Programme.
MLA
Clarke Robin, . The greenhouse gases. Nairobi, Kenya: United Nations Environment Programme. 1987.