Wannapa Saipimpin. 2004. The construction of a programmed lesson on energy use for mathayomsuksa one. Field of Study Environmental Education, Mahidol University;
Wannapa Saipimpin. (2004) The construction of a programmed lesson on energy use for mathayomsuksa one . Mahidol University/Bangkok.
Wannapa Saipimpin. The construction of a programmed lesson on energy use for mathayomsuksa one. . Bangkok:Mahidol University, 2004.
Wannapa Saipimpin. (2004) The construction of a programmed lesson on energy use for mathayomsuksa one . Mahidol University/Bangkok.