Vadhana Subhavan. 1994. Prehistoric human remains from Tam Nai U-Bol, Amphoe Sai-Yok, Thailand. Bangkok:Mahidol University;
Vadhana Subhavan. (1994) Prehistoric human remains from Tam Nai U-Bol, Amphoe Sai-Yok, Thailand (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Vadhana Subhavan. Prehistoric human remains from Tam Nai U-Bol, Amphoe Sai-Yok, Thailand. Bangkok:Mahidol University, 1994.
Vadhana Subhavan. (1994) Prehistoric human remains from Tam Nai U-Bol, Amphoe Sai-Yok, Thailand (รายงานผลงานวิจัย). Mahidol University:Bangkok.