©2013 National Research Council of Thailand
Khanal และผู้แต่งคนอื่นๆ. 1988. The factors affecting the use of sanitary latrines of villagers in Uthong district of Suphanburi province, Thailand. Faculty of Graduate Studies, Mahidol University;
Khanal และผู้แต่งคนอื่นๆ. (1988) The factors affecting the use of sanitary latrines of villagers in Uthong district of Suphanburi province, Thailand . Mahidol University/Bangkok.
Khanal และผู้แต่งคนอื่นๆ. The factors affecting the use of sanitary latrines of villagers in Uthong district of Suphanburi province, Thailand. . Bangkok:Mahidol University, 1988.
Khanal และผู้แต่งคนอื่นๆ. (1988) The factors affecting the use of sanitary latrines of villagers in Uthong district of Suphanburi province, Thailand . Mahidol University/Bangkok.