http://e-repository.perpus.iainsalatiga.ac.id/10465
http://e-repository.perpus.iainsalatiga.ac.id/10292
http://e-repository.perpus.iainsalatiga.ac.id/10922
http://e-repository.perpus.iainsalatiga.ac.id/11093
http://e-repository.perpus.iainsalatiga.ac.id/10963