Hendrowati H, Iskandar I, Fatmasari E. Elaboration of Transactional Conversation for Middle-School Students: Speaking Skills Through "COIN-SPA" Learning. IJRER [Internet]. 2023 Dec. 27 [cited 2025 Dec. 8];3(1):71-8. Available from: https://etdci.org/journal/ijrer/article/view/370