http://e-repository.perpus.iainsalatiga.ac.id/12904
http://e-repository.perpus.iainsalatiga.ac.id/12594
http://e-repository.perpus.iainsalatiga.ac.id/11274
http://e-repository.perpus.iainsalatiga.ac.id/12209
http://e-repository.perpus.iainsalatiga.ac.id/12091