http://e-repository.perpus.iainsalatiga.ac.id/13379
http://e-repository.perpus.iainsalatiga.ac.id/13218
http://e-repository.perpus.iainsalatiga.ac.id/13246
http://e-repository.perpus.iainsalatiga.ac.id/13258
http://e-repository.perpus.iainsalatiga.ac.id/13045