Nguyen, Minh Thi Thuy, Willy Renandya, Thuy Thi Thanh Pham, and Hanh Thi Pham. “LEARNING HOW TO WRITE SOCIALLY APPROPRIATE EMAILS THROUGH TEXTBOOKS: AN EVALUATION OF INTERNATIONAL ENGLISH TEXTBOOKS”. TEFLIN Journal 35, no. 1 (March 29, 2024): 66–89. Accessed July 2, 2024. https://journal.teflin.org/index.php/journal/article/view/2578.