http://e-repository.perpus.iainsalatiga.ac.id/17441
http://e-repository.perpus.iainsalatiga.ac.id/17659
http://e-repository.perpus.iainsalatiga.ac.id/18820
http://e-repository.perpus.iainsalatiga.ac.id/18316
http://e-repository.perpus.iainsalatiga.ac.id/19179