http://e-repository.perpus.iainsalatiga.ac.id/12196
http://e-repository.perpus.iainsalatiga.ac.id/17706
http://e-repository.perpus.iainsalatiga.ac.id/17676
http://e-repository.perpus.iainsalatiga.ac.id/15276
http://e-repository.perpus.iainsalatiga.ac.id/16424