http://e-repository.perpus.iainsalatiga.ac.id/9098
http://e-repository.perpus.iainsalatiga.ac.id/10298
http://e-repository.perpus.iainsalatiga.ac.id/10208
http://e-repository.perpus.iainsalatiga.ac.id/10216
http://e-repository.perpus.iainsalatiga.ac.id/11971