Environment Canada 1999: Priority Substance List Assessment Report, Hexachlorobutadiene, ISBN 0-662-29297-9. http://www.hc-sc.gc.ca/ewh-semt/pubs/contaminants/psl2-lsp2/hexachlorobutadiene/index-eng.php
Environment Canada 1999: Priority Substance List Assessment Report, Hexachlorobutadiene, ISBN 0-662-29297-9. http://www.hc-sc.gc.ca/ewh-semt/pubs/contaminants/psl2-lsp2/hexachlorobutadiene/index-eng.php