http://e-repository.perpus.iainsalatiga.ac.id/13514
http://e-repository.perpus.iainsalatiga.ac.id/13432
http://e-repository.perpus.iainsalatiga.ac.id/13276
http://e-repository.perpus.iainsalatiga.ac.id/13609
http://e-repository.perpus.iainsalatiga.ac.id/13761