http://e-repository.perpus.iainsalatiga.ac.id/13756
http://e-repository.perpus.iainsalatiga.ac.id/14175
http://e-repository.perpus.iainsalatiga.ac.id/14280
http://e-repository.perpus.iainsalatiga.ac.id/14687
http://e-repository.perpus.iainsalatiga.ac.id/14904