http://e-repository.perpus.iainsalatiga.ac.id/10409
http://e-repository.perpus.iainsalatiga.ac.id/10456
http://e-repository.perpus.iainsalatiga.ac.id/10468
http://e-repository.perpus.iainsalatiga.ac.id/10592
http://e-repository.perpus.iainsalatiga.ac.id/10177