APA
United Nations Conference on Trade and Development, United Nations Conference on Trade and Development, . (2004). Manual for the preparers and users of eco-efficien. New York: United Nations U. S. A.
Chicago
United Nations Conference on Trade and Development, United Nations Conference on Trade and Development, . 2004. Manual for the preparers and users of eco-efficien. New York: United Nations U. S. A.
Harvard
United Nations Conference on Trade and Development, United Nations Conference on Trade and Development, . (2004). Manual for the preparers and users of eco-efficien. New York: United Nations U. S. A.
MLA
United Nations Conference on Trade and Development, United Nations Conference on Trade and Development, . Manual for the preparers and users of eco-efficien. New York: United Nations U. S. A. 2004.
