Yanto Santosa and  Rozza Tri Kwatrina,  A Preliminary Study on Factors Determining the Success of High Conservation Value Area in Oil Palm Plantations.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2019, vol. 148(4). 189 - 192
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10010198.