http://e-repository.perpus.iainsalatiga.ac.id/12221
http://e-repository.perpus.iainsalatiga.ac.id/10229
http://e-repository.perpus.iainsalatiga.ac.id/9681
http://e-repository.perpus.iainsalatiga.ac.id/9077
http://e-repository.perpus.iainsalatiga.ac.id/8218