Pornthip Pholvicha. 1993. Ecology of teak beehole borer (Xyleutes ceramicus Walker) in Phayao province. Bangkok:Kasetsart University;
Pornthip Pholvicha. (1993) Ecology of teak beehole borer (Xyleutes ceramicus Walker) in Phayao province (รายงานผลงานวิจัย). Kasetsart University:Bangkok.
Pornthip Pholvicha. Ecology of teak beehole borer (Xyleutes ceramicus Walker) in Phayao province. Bangkok:Kasetsart University, 1993.
Pornthip Pholvicha. (1993) Ecology of teak beehole borer (Xyleutes ceramicus Walker) in Phayao province (รายงานผลงานวิจัย). Kasetsart University:Bangkok.