Nurman M, Yulia Arfanti. Development of Speaking Materials by Using Discussion Techniques at Muhammadiyah Vocational School 10 Kisaran. IJERE [Internet]. 2023 Sep. 20 [cited 2024 May 18];2(2):303-14. Available from: https://ejournal.ipinternasional.com/index.php/ijere/article/view/469