1. Azhar, H., Bait, B., Justin, J.J., 1992. Geology of Sarawak: guide for the field trip #1. A contribution to the Symposium on Tectonic Framework and Energy Resources of the Western Margin of the Pacific Basin; December 1991.
2. Geological and chemical factors affecting radon concentration in homes in Cornwall and Devon, UK;Ball;Environ. Geochem. Health,1993
3. Behaviour of radon in the geological environment;Ball;Q. J. Eng. Geol,1991
4. Banda, R.M., 1998. The geology and planktonic foraminiferal biostratigraphy of the NW Borneo Basin, Sarawak, Malaysia. Unpublished PhD dissertation, University of Tsukuba, Japan.
5. Banda, R.M., Heward, F., 2000. The general geology of the Niah Caves area, Sarawak. Unpublished report of the Minerals and Geosciences Malaysia Department; Kuching, Sarawak, Malaysia, 15pp.