1. American Oil Chemists’ Society, AOCS. (2009). Official Method, Cd 3d-63. Acid Value, Reapproved
2. American Oil Chemists’ Society, AOCS. (2013). Official Method, Cd 3-25. Saponification Value, Revised
3. American Oil Chemists’ Society, AOCS. (2011). Official method, Ca 6a-40. Unsaponifiable matter
4. Association of Official Analytical Chemists, AOAC. (2015). Official Method, 920, 159-1920 Iodine absorption number of oils and fats. Wijs method