Wilairat Kirin และ Punchalee Wasanasomsithi. (2007) The effects of extensive reading plus activities on the development of reading and writing skills and perceptions of undergraduate students. Chulalongkorn University:ม.ป.ท.Wilairat Kirin และ Punchalee Wasanasomsithi. 2007. The effects of extensive reading plus activities on the development of reading and writing skills and perceptions of undergraduate students. ม.ป.ท.:Chulalongkorn University;Wilairat Kirin และ Punchalee Wasanasomsithi. The effects of extensive reading plus activities on the development of reading and writing skills and perceptions of undergraduate students. ม.ป.ท.:Chulalongkorn University, 2007. Print.