Ratchai Jivavitoonkit. 1993. Studies on maize cultivars resistant to the corn stem borer, Ostrinia furnacalis (Guenee). Bangkok:Kasetsart University;
Ratchai Jivavitoonkit. (1993) Studies on maize cultivars resistant to the corn stem borer, Ostrinia furnacalis (Guenee) (รายงานผลงานวิจัย). Kasetsart University:Bangkok.
Ratchai Jivavitoonkit. Studies on maize cultivars resistant to the corn stem borer, Ostrinia furnacalis (Guenee). Bangkok:Kasetsart University, 1993.
Ratchai Jivavitoonkit. (1993) Studies on maize cultivars resistant to the corn stem borer, Ostrinia furnacalis (Guenee) (รายงานผลงานวิจัย). Kasetsart University:Bangkok.