APA
World Health Organization, . (2001). IPCS (concise international chemical assessment document no - 35): N-methyl-2-pyrrolidone (concise international chemical assessment document). Geneva: UNEP and World Health Organization.
Chicago
World Health Organization, . 2001. IPCS (concise international chemical assessment document no - 35): N-methyl-2-pyrrolidone (concise international chemical assessment document). Geneva: UNEP and World Health Organization.
Harvard
World Health Organization, . (2001). IPCS (concise international chemical assessment document no - 35): N-methyl-2-pyrrolidone (concise international chemical assessment document). Geneva: UNEP and World Health Organization.
MLA
World Health Organization, . IPCS (concise international chemical assessment document no - 35): N-methyl-2-pyrrolidone (concise international chemical assessment document). Geneva: UNEP and World Health Organization. 2001.