Somying Sumritpol. 2009. A survey study of portable electronic dictionary use among students at Thepsatri Rajabhat University. , Thammasat University;
Somying Sumritpol. (2009) A survey study of portable electronic dictionary use among students at Thepsatri Rajabhat University . Thammasat University/Bangkok.
Somying Sumritpol. A survey study of portable electronic dictionary use among students at Thepsatri Rajabhat University. . Bangkok:Thammasat University, 2009.
Somying Sumritpol. (2009) A survey study of portable electronic dictionary use among students at Thepsatri Rajabhat University . Thammasat University/Bangkok.