1. AOCS. (1993). Determination of tocopherols and tocotrienols in vegetable oils and fats by HPLC (pp. 8–89). AOCS.
2. Effects of palm oil processing parameters on yield;Baryeh;Journal of Food Engineering,2001
3. The oil palm and its sustainability;Basiron;Journal of Oil Palm Research,2004
4. Fats and oils handbook;Bockisch,1998
5. On the experimental attainment of optimum conditions;Box;Journal of Royal Statistical Society Series,1951