Andrian Fatmawijaya, Heru, Sugiyo Sugiyo, and Edy Purwanto. “The Effectiveness of Trisula Motivation Model-Based Classroom Guidance to Improve Students’ Self-Directed Learning”. Jurnal Bimbingan Konseling 9, no. 2 (April 21, 2020): 98-102. Accessed May 8, 2024. http://journal.unnes.ac.id/sju/jubk/article/view/37021.