Wilairat Kirin. 2007. The effect of Extensive Reading Plus activities on the development reading and writing skills and perceptions of undergraduate students. Field of Study English as an International Language, Chulalongkorn University;

Wilairat Kirin. The effect of Extensive Reading Plus activities on the development reading and writing skills and perceptions of undergraduate students. . Bangkok:Chulalongkorn University, 2007.

Wilairat Kirin. (2007) The effect of Extensive Reading Plus activities on the development reading and writing skills and perceptions of undergraduate students . Chulalongkorn University/Bangkok.