Romklao Artdej. 2010. The development of acid-base learning units for Thai high school students : a constructivist approach. Institute for Innovative Learning, Mahidol University;
Romklao Artdej. (2010) The development of acid-base learning units for Thai high school students : a constructivist approach . Mahidol University/Bangkok.
Romklao Artdej. The development of acid-base learning units for Thai high school students : a constructivist approach. . Bangkok:Mahidol University, 2010.
Romklao Artdej. (2010) The development of acid-base learning units for Thai high school students : a constructivist approach . Mahidol University/Bangkok.