http://e-repository.perpus.iainsalatiga.ac.id/19016
http://e-repository.perpus.iainsalatiga.ac.id/19104
http://e-repository.perpus.iainsalatiga.ac.id/19929
http://e-repository.perpus.iainsalatiga.ac.id/19938
http://e-repository.perpus.iainsalatiga.ac.id/19624