Muharram, Annisa Rahmania (2017) THE ENGLISH TEACHERS’ CHALLENGES AND EFFORTS IN TEACHING BY APPLYING 2013 CURRICULUM (A Descriptive Qualitative Study on the Tenth Grade English Teachers of SMA Islam Sultan Agung 1 Semarang in the Academic Year of 2017/2018). Undergraduate thesis, Fakultas Bahasa dan Ilmu Komunikasi UNISSULA.