1. Trading and arbitration rules;AFOA,1999
2. Official methods of analysis;AOAC,1990
3. International official methods of analysis;AOAC,2000
4. Official methods and recommended practices of the AOCS;AOCS,1998
5. Official procedures of the American Oil Chemists Society, approved procedure Am 5–04, rapid determination of oil/fat utilizing high temperature solvent extraction;AOCS,2005