APA
                "UNITED NATION P. C. A. S. D., "UNITED NATION P. C. A. S. D., . (1997). "Consolidated list of products whose consumption and sale have been banned withdrawn, reverely restricted or not approved by governments.". New: Yrok United Nations U S A.
                
                Chicago
                "UNITED NATION POLICY COORDINATION AND SUSTAINABLE DEV.(D/O).", "UNITED NATION POLICY COORDINATION AND SUSTAINABLE DEV.(D/O).", . 1997. "Consolidated list of products whose consumption and sale have been banned withdrawn, reverely restricted or not approved by governments.". New: Yrok United Nations U S A.
                
                Harvard
                "UNITED NATION P. C. A. S. D., "UNITED NATION P. C. A. S. D., . (1997). "Consolidated list of products whose consumption and sale have been banned withdrawn, reverely restricted or not approved by governments.". New: Yrok United Nations U S A.
                
                MLA
                "UNITED NATION POLICY COORDINATION AND SUSTAINABLE DEV.(D/O).", "UNITED NATION POLICY COORDINATION AND SUSTAINABLE DEV.(D/O).", . "Consolidated list of products whose consumption and sale have been banned withdrawn, reverely restricted or not approved by governments.". New: Yrok United Nations U S A. 1997.