http://e-repository.perpus.iainsalatiga.ac.id/20067
http://e-repository.perpus.iainsalatiga.ac.id/18809
http://e-repository.perpus.iainsalatiga.ac.id/18948
http://e-repository.perpus.iainsalatiga.ac.id/18526
http://e-repository.perpus.iainsalatiga.ac.id/18238