http://e-repository.perpus.iainsalatiga.ac.id/19023
http://e-repository.perpus.iainsalatiga.ac.id/19254
http://e-repository.perpus.iainsalatiga.ac.id/19643
http://e-repository.perpus.iainsalatiga.ac.id/19943
http://e-repository.perpus.iainsalatiga.ac.id/19629