Rahayu, Endah, and Erni Erni. “Form of Register in Buying and Selling Conversations at Dayun Market in Siak Regency”. Indonesian Journal of EFL and Linguistics 8, no. 1 (May 31, 2023): 169-178. Accessed October 22, 2025. https://indonesian-efl-journal.org/index.php/ijefll/article/view/663.