http://e-repository.perpus.iainsalatiga.ac.id/15172
http://e-repository.perpus.iainsalatiga.ac.id/14355
http://e-repository.perpus.iainsalatiga.ac.id/14425
http://e-repository.perpus.iainsalatiga.ac.id/14568
http://e-repository.perpus.iainsalatiga.ac.id/14499