Suphakit Niwattanakul. (1999) Intelligent tutoring system for data structure learning. Mahidol University,:ม.ป.ท.Suphakit Niwattanakul. 1999. Intelligent tutoring system for data structure learning. ม.ป.ท.:Mahidol University,;Suphakit Niwattanakul. Intelligent tutoring system for data structure learning. ม.ป.ท.:Mahidol University, 1999. Print.