ARIYANTO, J.; SYAMSIDAR, R.; JUSWANDI, J.; HERMANYSAH, H.; ELIA, F. Pragmatic Elements in English as a Foreign Language (EFL) Textbooks in Senior High Schools of Pekanbaru. INTERACTION: Jurnal Pendidikan Bahasa, v. 11, n. 2, p. 403-414, 21 out. 2024.