1.
Lubis AA, Siregar M. IMPROVING STUDENTS™ ACHIEVEMENT IN SPEAKING THROUGH THE APPLICATION OF SMALL GROUP DISCUSSION METHOD (SGD). TRANSFORM [Internet]. 31 Desember 2013 [dikutip 30 September 2026];2(4). Tersedia pada: https://jurnal.unimed.ac.id/2012/index.php/jelt/article/view/949