Sukmaning, Sandra, and Wahyuni K. 2007. “THE INVOLVEMENT OF FACULTY MEMBERS AND DISTANCE STUDENTS IN ONLINE TUTORIAL PROGRAM: UT EXPERIENCE”. Jurnal Pendidikan Terbuka Dan Jarak Jauh 8 (2):114-20. http://jurnal.ut.ac.id/index.php/jptjj/article/view/540.