Nursyafiqah Abdul Kahar and  Niraku Rosmawati Ahmad and  Hisham Mohamad and  Siti Nuruljannah Mohd Marzuki,  Preliminary Geotechnical Properties of Uncemented Sandstone Kati Formation.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2021, vol. 169(1). 13 - 17
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10011736.