Ruengkul, A. and Sukavatee, P. 2015. A SURVEY STUDY OF PERSONAL LEARNING ENVIRONMENT TOOLS FOR ENGLISH LANGUAGE LEARNING OF THAI EFL UNDERGRADUATE STUDENTS. PEOPLE: International Journal of Social Sciences. 1, 1 (Jul. 2015), 91–101. DOI:https://doi.org/10.20319/pijss.2015.s21.91101.