1. The geology and mineral resources of the neighbourhood of the Kulim area;Courtier;Kedah. Geol. Surv. Malaysia Map Bull.,1974
2. The palaeotectonic status of the Malay Peninsula;Burton;Palaeogeogr. Palaeoclimatol. Palaeoecol.,1970
3. Mesozoic,1973
4. The geology and mineral resources of the Bedung area, Kedah, west Malaysia;Burton;Geol. Surv. Malays. Map Bull.,1988
5. Geology and Mineral Resources of the Sungai Tiang Area;Teoh,1992