Pope, Geoffrey G. 1992. Paleoanthropological research in Lampang, northern Thailand. Illinois:University of Illinois;
Pope, Geoffrey G. (1992) Paleoanthropological research in Lampang, northern Thailand (รายงานผลงานวิจัย). University of Illinois:Illinois.
Pope, Geoffrey G. Paleoanthropological research in Lampang, northern Thailand. Illinois:University of Illinois, 1992.
Pope, Geoffrey G. (1992) Paleoanthropological research in Lampang, northern Thailand (รายงานผลงานวิจัย). University of Illinois:Illinois.