An Analysis of students' perception on teachers' characteristic in teaching english at the third grade of senior high school Muhammadiyah 1 Karanganyar in the academic year of 2015/2016 - Ratna Dewi (Jurusan Pendidikan Bahasa Inggris Fakultas Ilmu Tarbiyah dan Keguruan IAIN Surakarta, 2016)