http://e-repository.perpus.iainsalatiga.ac.id/18113
http://e-repository.perpus.iainsalatiga.ac.id/18755
http://e-repository.perpus.iainsalatiga.ac.id/18027
http://e-repository.perpus.iainsalatiga.ac.id/19463
http://e-repository.perpus.iainsalatiga.ac.id/19056