http://e-repository.perpus.iainsalatiga.ac.id/10436
http://e-repository.perpus.iainsalatiga.ac.id/10365
http://e-repository.perpus.iainsalatiga.ac.id/10717
http://e-repository.perpus.iainsalatiga.ac.id/10985
http://e-repository.perpus.iainsalatiga.ac.id/11172