1. CFIA. Identification and Classification Manual No. 1989 http://www.inspection.gc.ca/english/anima/fispoi/manman/canboi/chap2e.shtml
2. CFIA. Identification and Classification Manual No. 15/12/97 1997 http://www.inspection.gc.ca/english/anima/fispoi/manman/canboi/chap3e.shtml