Jeeranan Thongnak. 2010. An analysis of reading passages published in upstream textbooks. , Chiangrai Rajabhat University;
Jeeranan Thongnak. (2010) An analysis of reading passages published in upstream textbooks . Chiangrai Rajabhat University/Chiangrai.
Jeeranan Thongnak. An analysis of reading passages published in upstream textbooks. . Chiangrai:Chiangrai Rajabhat University, 2010.
Jeeranan Thongnak. (2010) An analysis of reading passages published in upstream textbooks . Chiangrai Rajabhat University/Chiangrai.