http://e-repository.perpus.iainsalatiga.ac.id/12199
http://e-repository.perpus.iainsalatiga.ac.id/13314
http://e-repository.perpus.iainsalatiga.ac.id/13282
http://e-repository.perpus.iainsalatiga.ac.id/12253
http://e-repository.perpus.iainsalatiga.ac.id/13199