Nipan Wannawech. 2001. State and problems of teaching music subjects from an elective subjects area at the upper secondary education level, under the jurisdiction of Department of General Education, Bangkok. , Mahidol University;

Nipan Wannawech. State and problems of teaching music subjects from an elective subjects area at the upper secondary education level, under the jurisdiction of Department of General Education, Bangkok. . Bangkok:Mahidol University, 2001.

Nipan Wannawech. (2001) State and problems of teaching music subjects from an elective subjects area at the upper secondary education level, under the jurisdiction of Department of General Education, Bangkok . Mahidol University/Bangkok.