Sary, Devi Ratna (2015) THE EFFECTIVENESS OF CONTEXTUAL TEACHING AND LEARNING (CTL) TO IMPROVE STUDENTS’ ACHIEVEMENT IN WRITING DESCRIPTIVE TEXT (An Experimental Study of the Tenth Graders of SMA Islam Sultan Agung 1 Semarang in the Academic Year of 2015/2016). Undergraduate thesis, Fakultas Bahasa UNISSULA.