ZUMBACH, J. and SPRAUL, P. (2007) “THE ROLE OF EXPERT AND NOVICE TUTORS IN COMPUTER MEDIATED AND FACE-TO-FACE PROBLEM-BASED LEARNING”, Research and Practice in Technology Enhanced Learning, 2(2), pp. 105–129. Available at: https://rptel.apsce.net/index.php/RPTEL/article/view/2007-02007 (Accessed: 13 May 2024).