Seftyan Nugroho, Y. . (2021) “The Illocutionary Acts Of Written Conversation In Eleventh Grade Senior High School Students’ Textbook : Modul Pengayaan Bahasa Dan Sastra Inggris Peminatan Semester 2”, Jurnal Sosial Teknologi, 1(12), pp. 1.588 – 1.594. doi: 10.59188/jurnalsostech.v1i12.265.