1. Ahmad, A. L., Ismail, S., & Bhatia, S. (2003). Water recycling from palm oil mill effluent (POME) using membrane technology. Desalination, 157, 87–95.
2. Baharuddin, A. S., Wakisaka, M., Shirai, Y., Abd-Aziz, S., Rahman, N. A. A., & Hassan, M. A. (2009). Co-composting of empty fruit bunches and partially treated palm oil palm mill effluents in pilot scale. International Journal of Agricultural Research, 4, 69–78.
3. Baharuddin, A. S., Hock, L. S., Yusof, M. Z., Rahman, N. A. A., Shah, U. K. M., Hassan, M. A., et al. (2010). Effects of palm oil mill effluent anaerobic sludge from 500 m3 of closed anaerobic methane digested tank on pressed-shredded empty fruit bunch (EFB) composting process. African Journal of Biotechnology, 9, 2427–2436.
4. Baharuddin, A. S., Rahman, N. A. A., Shah, U. K. M., Hassan, M. A., Wakisaka, M., & Shirai, Y. (2011). Evaluation of pressed shredded empty fruit bunch-palm oil mill effluent anaerobic sludge based compost using Fourier transform infrared and nuclear magnetic resonance analysis. African Journal of Biotechnology, 41, 8082–8089.
5. Hamdan, A. B., Tarmizi, A. B., & Tayeb, M. D. (1998). Empty fruit bunch mulching and nitrogen fertilizer amendment: The resultant effect on oil palm performance and soil properties. PORIM Bulletin Palm Oil Research Institute Malaysia, 37, 105–111.