XINGLI, X. (2013) “ANALYSIS OF THE SPEAKING MATERIALS IN TEXTBOOK‘MANDIRI：PRACTISE YOUR ENGLISH COMPETENCE (FOR SMK AND MAK XI)’BASED ON 2006 ENGLISH STANDARD OF CONTENT (SI)”, RETAIN : Journal of Research in English Language Teaching, 1(3). Available at: https://ejournal.unesa.ac.id/index.php/retain/article/view/3475 (Accessed: 19May2024).