http://e-repository.perpus.iainsalatiga.ac.id/18461
http://e-repository.perpus.iainsalatiga.ac.id/19097
http://e-repository.perpus.iainsalatiga.ac.id/18177
http://e-repository.perpus.iainsalatiga.ac.id/18572
http://e-repository.perpus.iainsalatiga.ac.id/19499