1. Lim , K.H. Palm Oil Mill Quality Control Laboratories PORIM Workshop on Quality in the Palm Oil Industry Kuala Lumpur 1983
2. Jacobsberg , B. The Influence of Milling and Storage Condition on the Bleachability and keepability of Palm Oil ISP Conference on Quality & Marketing of Oil Palm Products 1969
3. Olie , J.J. Some Factors Influencing the Bleachability of Palm Oil Ibid.
4. Thieme , W.L. J.J. Olie Discolouration of Oil Palm Kernels in Relation to Processing Temperature and Time Ibid.