http://e-repository.perpus.iainsalatiga.ac.id/8429
http://e-repository.perpus.iainsalatiga.ac.id/8779
http://e-repository.perpus.iainsalatiga.ac.id/9769
http://e-repository.perpus.iainsalatiga.ac.id/9800
http://e-repository.perpus.iainsalatiga.ac.id/9756