http://e-repository.perpus.iainsalatiga.ac.id/12594
http://e-repository.perpus.iainsalatiga.ac.id/12904
http://e-repository.perpus.iainsalatiga.ac.id/13221
http://e-repository.perpus.iainsalatiga.ac.id/13325
http://e-repository.perpus.iainsalatiga.ac.id/12554