Noppadol Boonsawang และ Vichai Chutakositkanon. (2009) Geomorphology of Ban Pak Nam Area, Changwat Prachuap Khiri Khan. <i>Bulletin of Earth Sciences of Thailand (BEST)</i>, <i>2</i>(2-Jan), 69-70.Noppadol Boonsawang และ Vichai Chutakositkanon. "Geomorphology of Ban Pak Nam Area, Changwat Prachuap Khiri Khan". Bulletin of Earth Sciences of Thailand (BEST) 2 (2009):69-70.Noppadol Boonsawang และ Vichai Chutakositkanon. Geomorphology of Ban Pak Nam Area, Changwat Prachuap Khiri Khan. Department of Geology, Chulalongkorn University:ม.ป.ท. 2009.