DARRIN, A. AN ANALYSIS OF ENGLISH TEXTBOOK FOR FIRST GRADERS OF SENIOR HIGH SCHOOL “BAHASA INGGRIS UNTUK SMA/MA DAN SMK/MAK KELAS X” PUBLISHED BY PUTRA NUGRAHA AND USED IN SMAN 18 SURABAYA BASED ON BASIC COMPETENCES OF CURRICULUM 2013. RETAIN : Journal of Research in English Language Teaching, v. 2, n. 1, 24 jan. 2014.