1. Badmus, G. A. (1991). NIFOR automated small scale oil palm fruit processing equipment; its need, development and cost effectiveness. In International palm oil conference, Palm Oil Research Institute, Malaysia
2. Creaser, J. (1989). Mechanical extraction of vegetable oils. In International conference on palms and palm products, Nigerian Institute for Oil Palm Research, Benin City, Nigeria, paper no. 77
3. Wear of cultivator shares in abrasive South Australian soils;Ferguson;Journal of Agricultural Engineering Research,1998
4. The oil palm;Hartley,1988
5. Expression of oil from oilseeds––a review;Khan;Journal of Agricultural Engineering Research,1983